2010 United States Census
The 2010 United States Census is the twenty-third and most recent United States national census. National Census Day, the reference day used for the census, was April 1, 2010; the census was taken via mail-in citizen self-reporting, with enumerators serving to spot-check randomly selected neighborhoods and communities. As part of a drive to increase the count's accuracy, 635,000 temporary enumerators were hired; the population of the United States was counted as 308,745,538, a 9.7% increase from the 2000 Census. This was the first census in which all states recorded a population of over half a million, as well as the first in which all 100 largest cities recorded populations of over 200,000; as required by the United States Constitution, the U. S. census has been conducted every 10 years since 1790. The 2000 U. S. Census was the previous census completed. Participation in the U. S. Census is required by law in Title 13 of the United States Code. On January 25, 2010, Census Bureau Director Robert Groves inaugurated the 2010 Census enumeration by counting World War II veteran Clifton Jackson, a resident of Noorvik, Alaska.
More than 120 million census forms were delivered by the U. S. Post Office beginning March 15, 2010; the number of forms mailed out or hand-delivered by the Census Bureau was 134 million on April 1, 2010. Although the questionnaire used April 1, 2010 as the reference date as to where a person was living, an insert dated March 15, 2010 included the following printed in bold type: "Please complete and mail back the enclosed census form today." The 2010 Census national mail participation rate was 74%. From April through July 2010, census takers visited households that did not return a form, an operation called "non-response follow-up". In December 2010, the U. S. Census Bureau delivered population information to the U. S. President for apportionment, in March 2011, complete redistricting data was delivered to states. Identifiable information will be available in 2082; the Census Bureau did not use a long form for the 2010 Census. In several previous censuses, one in six households received this long form, which asked for detailed social and economic information.
The 2010 Census used only a short form asking ten basic questions: How many people were living or staying in this house, apartment, or mobile home on April 1, 2010? Were there any additional people staying here on April 1, 2010 that you did not include in Question 1? Mark all that apply: Is this house, apartment, or mobile home – What is your telephone number? What is Person 1's name? What is Person 1's sex? What is Person 1's age and Person 1's date of birth? Is Person 1 of Hispanic, Latino, or Spanish origin? What is Person 1's race? Does Person 1 sometimes live or stay somewhere else? The form included space to repeat all of these questions for up to twelve residents total. In contrast to the 2000 census, an Internet response option was not offered, nor was the form available for download. Detailed socioeconomic information collected during past censuses will continue to be collected through the American Community Survey; the survey provides data about communities in the United States on a 1-year or 3-year cycle, depending on the size of the community, rather than once every 10 years.
A small percentage of the population on a rotating basis will receive the survey each year, no household will receive it more than once every five years. In June 2009, the U. S. Census Bureau announced. However, the final form did not contain a separate "same-sex married couple" option; when noting the relationship between household members, same-sex couples who are married could mark their spouses as being "Husband or wife", the same response given by opposite-sex married couples. An "unmarried partner" option was available for couples; the 2010 census cost $13 billion $42 per capita. Operational costs were $5.4 billion under the $7 billion budget. In December 2010 the Government Accountability Office noted that the cost of conducting the census has doubled each decade since 1970. In a detailed 2004 report to Congress, the GAO called on the Census Bureau to address cost and design issues, at that time, had estimated the 2010 Census cost to be $11 billion. In August 2010, Commerce Secretary Gary Locke announced that the census operational costs came in under budget.
Locke credited the management practices of Census Bureau director Robert Groves, citing in particular the decision to buy additional advertising in locations where responses lagged, which improved the overall response rate. The agency has begun to rely more on questioning neighbors or other reliable third parties when a person could not be reached at home, which reduced the cost of follow-up visits. Census data for about 22% of U. S. househol
Population density is a measurement of population per unit area or unit volume. It is applied to living organisms, most of the time to humans, it is a key geographical term. In simple terms population density refers to the number of people living in an area per kilometer square. Population density is population divided by total land water volume, as appropriate. Low densities may lead to further reduced fertility; this is called the Allee effect after the scientist. Examples of the causes in low population densities include: Increased problems with locating sexual mates Increased inbreeding For humans, population density is the number of people per unit of area quoted per square kilometer or square mile; this may be calculated for a county, country, another territory or the entire world. The world's population is around 7,500,000,000 and Earth's total area is 510,000,000 square kilometers. Therefore, the worldwide human population density is around 7,500,000,000 ÷ 510,000,000 = 14.7 per km2. If only the Earth's land area of 150,000,000 km2 is taken into account human population density is 50 per km2.
This includes all continental and island land area, including Antarctica. If Antarctica is excluded population density rises to over 55 people per km2. However, over half of the Earth's land mass consists of areas inhospitable to human habitation, such as deserts and high mountains, population tends to cluster around seaports and fresh-water sources. Thus, this number by itself does not give any helpful measurement of human population density. Several of the most densely populated territories in the world are city-states and dependencies; these territories have a small area and a high urbanization level, with an economically specialized city population drawing on rural resources outside the area, illustrating the difference between high population density and overpopulation The potential to maintain the agricultural aspects of deserts is limited as there is not enough precipitation to support a sustainable land. The population in these areas are low. Therefore, cities in the Middle East, such as Dubai, have been increasing in population and infrastructure growth at a fast pace.
Cities with high population densities are, by some, considered to be overpopulated, though this will depend on factors like quality of housing and infrastructure and access to resources. Most of the most densely populated cities are in Southeast Asia, though Cairo and Lagos in Africa fall into this category. City population and area are, however dependent on the definition of "urban area" used: densities are invariably higher for the central city area than when suburban settlements and the intervening rural areas are included, as in the areas of agglomeration or metropolitan area, the latter sometimes including neighboring cities. For instance, Milwaukee has a greater population density when just the inner city is measured, the surrounding suburbs excluded. In comparison, based on a world population of seven billion, the world's inhabitants, as a loose crowd taking up ten square feet per person, would occupy a space a little larger than Delaware's land area; the Gaza Strip has a population density of 5,046 pop/km.
Although arithmetic density is the most common way of measuring population density, several other methods have been developed to provide a more accurate measure of population density over a specific area. Arithmetic density: The total number of people / area of land Physiological density: The total population / area of arable land Agricultural density: The total rural population / area of arable land Residential density: The number of people living in an urban area / area of residential land Urban density: The number of people inhabiting an urban area / total area of urban land Ecological optimum: The density of population that can be supported by the natural resources Demography Human geography Idealized population Optimum population Population genetics Population health Population momentum Population pyramid Rural transport problem Small population size Distance sampling List of population concern organizations List of countries by population density List of cities by population density List of city districts by population density List of English districts by population density List of European cities proper by population density List of United States cities by population density List of islands by population density List of U.
S. states by population density List of Australian suburbs by population density Selected Current and Historic City, Ward & Neighborhood Density Duncan Smith / UCL Centre for Advanced Spatial Analysis. "World Population Density". Exploratory map shows data from the Global Human Settlement Layer produced by the European Commission JRC and the CIESIN Columbia University
A city is a large human settlement. Cities have extensive systems for housing, sanitation, land use, communication, their density facilitates interaction between people, government organizations and businesses, sometimes benefiting different parties in the process. City-dwellers have been a small proportion of humanity overall, but following two centuries of unprecedented and rapid urbanization half of the world population now lives in cities, which has had profound consequences for global sustainability. Present-day cities form the core of larger metropolitan areas and urban areas—creating numerous commuters traveling towards city centers for employment and edification. However, in a world of intensifying globalization, all cities are in different degree connected globally beyond these regions; the most populated city proper is Chongqing while the most populous metropolitan areas are the Greater Tokyo Area, the Shanghai area, Jabodetabek. The cities of Faiyum and Varanasi are among those laying claim to longest continual inhabitation.
A city is distinguished from other human settlements by its great size, but by its functions and its special symbolic status, which may be conferred by a central authority. The term can refer either to the physical streets and buildings of the city or to the collection of people who dwell there, can be used in a general sense to mean urban rather than rural territory. A variety of definitions, invoking population, population density, number of dwellings, economic function, infrastructure, are used in national censuses to classify populations as urban. Common population definitions for a city range between 1,500 and 50,000 people, with most U. S. states using a minimum between 5,000 inhabitants. However, some jurisdictions set no such minimums. In the United Kingdom, city status is awarded by the government and remains permanently, resulting in some small cities, such as Wells and St Davids. According to the "functional definition" a city is not distinguished by size alone, but by the role it plays within a larger political context.
Cities serve as administrative, commercial and cultural hubs for their larger surrounding areas. Examples of settlements called city which may not meet any of the traditional criteria to be named such include Broad Top City and City Dulas, Anglesey, a hamlet; the presence of a literate elite is sometimes included in the definition. A typical city has professional administrators and some form of taxation to support the government workers; the governments may be based on heredity, military power, work projects such as canal building, food distribution, land ownership, commerce, finance, or a combination of these. Societies that live in cities are called civilizations; the word city and the related civilization come, via Old French, from the Latin root civitas meaning citizenship or community member and coming to correspond with urbs, meaning city in a more physical sense. The Roman civitas was linked with the Greek "polis"—another common root appearing in English words such as metropolis. Urban geography deals both with their internal structure.
Town siting has varied through history according to natural, technological and military contexts. Access to water has long been a major factor in city placement and growth, despite exceptions enabled by the advent of rail transport in the nineteenth century, through the present most of the world's urban population lives near the coast or on a river. Urban areas as a rule cannot produce their own food and therefore must develop some relationship with a hinterland which sustains them. Only in special cases such as mining towns which play a vital role in long-distance trade, are cities disconnected from the countryside which feeds them. Thus, centrality within a productive region influences siting, as economic forces would in theory favor the creation of market places in optimal mutually reachable locations; the vast majority of cities have a central area containing buildings with special economic and religious significance. Archaeologists refer to this area by the Greek term temenos; these spaces reflect and amplify the city's centrality and importance to its wider sphere of influence.
Today cities have downtown, sometimes coincident with a central business district. Cities have public spaces where anyone can go; these include owned spaces open to the public as well as forms of public land such as public domain and the commons. Western philosophy since the time of the Greek agora has considered physical public space as the substrate of the symbolic public sphere. Public art adorns public spaces. Parks and other natural sites within cities provide residents with relief from the hardness and regularity of typical built environments. Urban structure follows one or more basic patterns: geomorphic, concentric and curvilinear. Physical environment constrains the form in which a city is built. If located on a mountainside, urban structure may rely on winding roads, it may be adapted to its means of subsistence. And it may be set up for optimal defense given the surrounding landscape. Beyond these "geomorphi
United States House of Representatives
The United States House of Representatives is the lower chamber of the United States Congress, the Senate being the upper chamber. Together they compose the legislature of the United States; the composition of the House is established by Article One of the United States Constitution. The House is composed of Representatives who sit in congressional districts that are allocated to each of the 50 states on a basis of population as measured by the U. S. Census, with each district entitled to one representative. Since its inception in 1789, all Representatives have been directly elected; the total number of voting representatives is fixed by law at 435. As of the 2010 Census, the largest delegation is that of California, with fifty-three representatives. Seven states have only one representative: Alaska, Montana, North Dakota, South Dakota and Wyoming; the House is charged with the passage of federal legislation, known as bills, after concurrence by the Senate, are sent to the President for consideration.
In addition to this basic power, the House has certain exclusive powers, among them the power to initiate all bills related to revenue. The House meets in the south wing of the United States Capitol; the presiding officer is the Speaker of the House, elected by the members thereof. The Speaker and other floor leaders are chosen by the Democratic Caucus or the Republican Conference, depending on whichever party has more voting members. Under the Articles of Confederation, the Congress of the Confederation was a unicameral body in which each state was represented, in which each state had a veto over most action. After eight years of a more limited confederal government under the Articles, numerous political leaders such as James Madison and Alexander Hamilton initiated the Constitutional Convention in 1787, which received the Confederation Congress's sanction to "amend the Articles of Confederation". All states except Rhode Island agreed to send delegates; the issue of how to structure Congress was one of the most divisive among the founders during the Convention.
Edmund Randolph's Virginia Plan called for a bicameral Congress: the lower house would be "of the people", elected directly by the people of the United States and representing public opinion, a more deliberative upper house, elected by the lower house, that would represent the individual states, would be less susceptible to variations of mass sentiment. The House is referred to as the lower house, with the Senate being the upper house, although the United States Constitution does not use that terminology. Both houses' approval is necessary for the passage of legislation; the Virginia Plan drew the support of delegates from large states such as Virginia and Pennsylvania, as it called for representation based on population. The smaller states, favored the New Jersey Plan, which called for a unicameral Congress with equal representation for the states; the Convention reached the Connecticut Compromise or Great Compromise, under which one house of Congress would provide representation proportional to each state's population, whereas the other would provide equal representation amongst the states.
The Constitution was ratified by the requisite number of states in 1788, but its implementation was set for March 4, 1789. The House began work on April 1789, when it achieved a quorum for the first time. During the first half of the 19th century, the House was in conflict with the Senate over regionally divisive issues, including slavery; the North was much more populous than the South, therefore dominated the House of Representatives. However, the North held no such advantage in the Senate, where the equal representation of states prevailed. Regional conflict was most pronounced over the issue of slavery. One example of a provision supported by the House but blocked by the Senate was the Wilmot Proviso, which sought to ban slavery in the land gained during the Mexican–American War. Conflict over slavery and other issues persisted until the Civil War, which began soon after several southern states attempted to secede from the Union; the war culminated in the abolition of slavery. All southern senators except Andrew Johnson resigned their seats at the beginning of the war, therefore the Senate did not hold the balance of power between North and South during the war.
The years of Reconstruction that followed witnessed large majorities for the Republican Party, which many Americans associated with the Union's victory in the Civil War and the ending of slavery. The Reconstruction period ended in about 1877; the Democratic Party and Republican Party each held majorities in the House at various times. The late 19th and early 20th centuries saw a dramatic increase in the power of the Speaker of the House; the rise of the Speaker's influence began in the 1890s, during the tenure of Republican Thomas Brackett Reed. "Czar Reed", as he was nicknamed, attempted to put into effect his view that "The best system is to have one party govern and the other party watch." The leadership structure of the House developed during the same period, with the positions of Majority Leader and Minority Leader being created in 1899. While the Minority Leader
High school (North America)
High school is a term used in the United States and Canada to describe the level of education students receive from 13 to 18 years old, although there is some variation. Most comparable to secondary schools, high schools deliver phase three of the ISCED model of education. High schools have subject-based classes; the name high school is applied in other countries, but no universal generalization can be made as to the age range, financial status, or ability level of the pupils accepted. In North America, most high schools include grades nine through twelve and students attend them following junior high school; the first institution labeled as a "high school" was Edinburgh's Royal High School in Scotland, founded in 1505. The Royal High School was used as a model for the first public high school in the United States, Boston Latin School, founded in Boston, Massachusetts in 1635. Boston Latin School was a private school, so although it did become the first public high school, a school system in Dedham, Massachusetts was the first to be supported by public taxation.
The schools prepared boys for the church. The length of the school day varied with the seasons, but there was a shortage of Latin speakers available to become teachers because the job was unattractive due to low status and low pay; the colony ordered in the English Protestant Tutor, retitled as The New England Primer, to be used as a textbook, the tuition was written by and had a Calvinist tone. This was the start of a secondary education system. In 1642, the Massachusetts Bay Colony was able to pass a law to require parents to make sure that their children were able to read, which required some form of elementary education. In 1647, Massachusetts again passed a law that required communities to establish some type of public schooling system. Elementary schools were to be formed in every town with 50 or more families, every town with at least 100 families would have to provide a Latin Grammar School. Over a century in 1779, Thomas Jefferson proposed the opening of new secondary schools to provide segregated secondary schools with different tracks in his words for "the laboring and the learned."
The new academies would be practical in nature but allow a few of the working class to advance by "raking a few geniuses from the rubbish." At this time, the colonies were planning to break away from Lord North government in Britain, working up a constitution which would define the white colonists' freedoms and rights. In November 1783, the American colonies stood on their own. In 1785, before the U. S. Constitution was ratified, the Continental Congress passed a law calling for a survey of the "Northwest Territory" which included what was to become the state of Ohio; the law created "townships". Under the constitution, education was devolved to individual states; the Pennsylvania state constitution, written in 1790, calls for free public education, but only for poor children, assuming that the rich will pay for their own children's schooling. In 1805, the New York Public School Society was formed by the wealthy to provide education to the poor; these schools were run on the Lancasterian system, in which one "master" taught hundreds of students in a single room.
The masters would give wrote lessons to the older students, who would pass it down to the younger students. Society was moving from an agrarian model with small independent plots to an industrial one, where workers needed to be literate and numerate. Lancastrian schools emphasized discipline and obedience: qualities that factory owners needed in their workers. An 1817 Boston Town Meeting petitioned for the establishment of a system of free public primary schools; the main support came from local merchants and wealthier artisans, while many wage earners opposed it because they knew they would be paying for it through income taxation. In spite of this, Boston Latin School became public in 1820; this was the first public high school in the United States. Seven years a state law in Massachusetts made all grades of public school open to all pupils, free of charge. However, in the slave-owning states, things were different. After public schools were being opened up to all ages in Massachusetts, in the 1830s, it was illegal in southern states to teach black children to read.
High schools were out of the question. After many years of advocacy, in 1957, federal court ordered the integration of Little Rock, Arkansas public schools; the governor sent in troops to physically prevent nine African American students from enrolling at all-white Central High School. Though, this decision was overturned by the president; the same delay in equality in public high schools can be accounted for the general regarding of other groups as minorities in the US. While there is no set standard for American high schools, some generalizations can be made about the majority. Schools are managed by elected school districts. There is a range in quality from basic education to more intellectually-stimulating environments for students aged 13 to 18 years of age. Pupils enter at the age of 13 or 14 and pass through four years: Freshman Sophomore Junior Senior School years are around nine months long, are broken up into quarters or semesters. College entry is controlled by many factors including Grade Point Average, an elective SAT or ACT exam run by two non-profit organizations: the Colle
The Minnesota Twins are an American professional baseball team based in Minneapolis, Minnesota. The team competes in the Central division of the American League, is named after the Twin Cities area comprising Minneapolis and St. Paul; the franchise won the World Series in 1924 as the Washington Senators, in 1987 and 1991 as the Twins. The franchise moved from Washington, D. C. to Minnesota at the start of the 1961 season. The Twins played in Metropolitan Stadium from 1961 to 1981 and the Hubert H. Humphrey Metrodome from 1982 to 2009; the team played its inaugural game at Target Field on April 12, 2010. Through the 2017 season, the team has fielded 18 American League batting champions; the team has hosted five All-Star Games: 1937 and 1956 in Washington, D. C, 1965, 1985 and 2014 in Minneapolis-St. Paul; the team was founded in Washington, D. C. in 1901 as one of the eight original teams of the American League, named the Washington Senators or Washington Nationals. The team endured long bouts of mediocrity immortalized in the 1955 Broadway musical Damn Yankees.
The Washington Senators spent the first decade of their existence finishing near the bottom of the American League standings. Their fortunes began to improve with the arrival of 19-year-old pitcher, Walter Johnson, in 1907. Johnson blossomed in 1911 with 25 victories, although the Senators still finished the season in seventh place. In 1912, the Senators improved as their pitching staff led the league in team earned run average and in strikeouts. Johnson won 33 games while teammate Bob Groom added another 24 wins to help the Senators finish the season in second place. Manager Clark Griffith joined the team in 1912 and became the team's owner in 1920; the Senators continued to perform respectably in 1913 with Johnson posting a career-high 35 victories, as the team once again finished in second place. The Senators fell into another period of decline for the next decade; the team had a period of prolonged success in the 1920s and 1930s, led by Walter Johnson, as well as additional Hall-of-Famer Bucky Harris, Goose Goslin, Sam Rice, Heinie Manush, Joe Cronin.
In particular, a rejuvenated Johnson rebounded in 1924 to win 23 games with the help of his catcher, Muddy Ruel, as the Senators won the American League pennant for the first time in the history of the franchise. The Senators faced John McGraw's favored New York Giants in the 1924 World Series; the two teams traded wins forth with three games of the first six being decided by one run. In the deciding 7th game, the Senators were trailing the Giants 3 to 1 in the 8th inning when Bucky Harris hit a routine ground ball to third which hit a pebble and took a bad hop over Giants third baseman Freddie Lindstrom. Two runners scored on the play. An aging Walter Johnson came in to pitch the ninth inning, held the Giants scoreless into extra innings. In the bottom of the twelfth inning with Ruel at bat, he hit a high, foul ball directly over home plate; the Giants' catcher, Hank Gowdy, dropped his protective mask to field the ball but, failing to toss the mask aside, stumbled over it and dropped the ball, thus giving Ruel another chance to bat.
On the next pitch, Ruel hit a double and proceeded to score the winning run when Earl McNeely hit a ground ball that took another bad hop over Lindstrom's head. This would mark the only World Series triumph for the franchise during their 60-year tenure in Washington; the following season they repeated as American League champions but lost the 1925 World Series to the Pittsburgh Pirates. After Walter Johnson's retirement in 1927, he was hired as manager of the Senators. After enduring a few losing seasons, the team returned to contention in 1930. In 1933, Senators owner Clark Griffith returned to the formula that worked for him nine years prior: 26-year-old shortstop Joe Cronin became player-manager; the Senators posted a 99–53 record and cruised to the pennant seven games ahead of the New York Yankees, but in the 1933 World Series the Giants exacted their revenge winning in five games. Following the loss, the Senators sank all the way to seventh place in 1934 and attendance began to fall. Despite the return of Harris as manager from 1935–42 and again from 1950–54, Washington was a losing ball club for the next 25 years contending for the pennant only during World War II.
Washington came to be known as "first in war, first in peace, last in the American League", with their hard luck being crucial to the plot of the musical and film Damn Yankees. Cecil Travis, Buddy Myer, Roy Sievers, Mickey Vernon, Eddie Yost were notable Senators players whose careers were spent in obscurity due to the team's lack of success. In 1954, the Senators signed future Hall of Fame member Harmon Killebrew. By 1959 he was the Senators’ regular third baseman and led the league with 42 home runs earning him a starting spot on the American League All-Star team. After Griffith's death in 1955, his nephew and adopted son Calvin took over the team presidency. Calvin sold Griffith Stadium to the city of Washington and leased it back leading to speculation that the team was planning to move as the Boston Braves, St. Louis Browns and Philadelphia Athletics had all done in the early 1950s. By 1957, after an early flirtation with San Francisco, Griffith began courting Minneapolis–St. Paul, a prolonged process that resulted in his rejecting the Twin Cities' first offer before agreeing to relocate.
The American League opposed the move at first, but in 1960 a deal was reached
A census is the procedure of systematically acquiring and recording information about the members of a given population. The term is used in connection with national population and housing censuses; the United Nations defines the essential features of population and housing censuses as "individual enumeration, universality within a defined territory and defined periodicity", recommends that population censuses be taken at least every 10 years. United Nations recommendations cover census topics to be collected, official definitions and other useful information to co-ordinate international practice; the word is of Latin origin: during the Roman Republic, the census was a list that kept track of all adult males fit for military service. The modern census is essential to international comparisons of any kind of statistics, censuses collect data on many attributes of a population, not just how many people there are. Censuses began as the only method of collecting national demographic data, are now part of a larger system of different surveys.
Although population estimates remain an important function of a census, including the geographic distribution of the population, statistics can be produced about combinations of attributes e.g. education by age and sex in different regions. Current administrative data systems allow for other approaches to enumeration with the same level of detail but raise concerns about privacy and the possibility of biasing estimates. A census can be contrasted with sampling in which information is obtained only from a subset of a population. Modern census data are used for research, business marketing, planning, as a baseline for designing sample surveys by providing a sampling frame such as an address register. Census counts are necessary to adjust samples to be representative of a population by weighting them as is common in opinion polling. Stratification requires knowledge of the relative sizes of different population strata which can be derived from census enumerations. In some countries, the census provides the official counts used to apportion the number of elected representatives to regions.
In many cases, a chosen random sample can provide more accurate information than attempts to get a population census. A census is construed as the opposite of a sample as its intent is to count everyone in a population rather than a fraction. However, population censuses rely on a sampling frame to count the population; this is the only way to be sure that everyone has been included as otherwise those not responding would not be followed up on and individuals could be missed. The fundamental premise of a census is that the population is not known and a new estimate is to be made by the analysis of primary data; the use of a sampling frame is counterintuitive as it suggests that the population size is known. However, a census is used to collect attribute data on the individuals in the nation; this process of sampling marks the difference between historical census, a house to house process or the product of an imperial decree, the modern statistical project. The sampling frame used by census is always an address register.
Thus it is not known how many people there are in each household. Depending on the mode of enumeration, a form is sent to the householder, an enumerator calls, or administrative records for the dwelling are accessed; as a preliminary to the dispatch of forms, census workers will check any address problems on the ground. While it may seem straightforward to use the postal service file for this purpose, this can be out of date and some dwellings may contain a number of independent households. A particular problem is what are termed'communal establishments' which category includes student residences, religious orders, homes for the elderly, people in prisons etc; as these are not enumerated by a single householder, they are treated differently and visited by special teams of census workers to ensure they are classified appropriately. Individuals are counted within households and information is collected about the household structure and the housing. For this reason international documents refer to censuses of housing.
The census response is made by a household, indicating details of individuals resident there. An important aspect of census enumerations is determining which individuals can be counted from which cannot be counted. Broadly, three definitions can be used: de facto residence; this is important to consider individuals who have temporary addresses. Every person should be identified uniquely as resident in one place but where they happen to be on Census Day, their de facto residence, may not be the best place to count them. Where an individual uses services may be more useful and this is at their usual, or de jure, residence. An individual may be represented at a permanent address a family home for students or long term migrants, it is necessary to have a precise definition of residence to decide whether visitors to a country should be included in the population count. This is becoming more important as students travel abroad for education for a period of several years. Other groups causing problems of enumeration are new born babies, people away on holiday, people moving home around census day, people without a fixed address.
People having second homes because of working in another part of the country or retaining a holiday cottage are dif