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
Race and ethnicity in the United States Census
Race and ethnicity in the United States Census, defined by the federal Office of Management and Budget and the United States Census Bureau, are self-identification data items in which residents choose the race or races with which they most identify, indicate whether or not they are of Hispanic or Latino origin. The racial categories represent a social-political construct for the race or races that respondents consider themselves to be and, "generally reflect a social definition of race recognized in this country." OMB defines the concept of race as outlined for the US Census as not "scientific or anthropological" and takes into account "social and cultural characteristics as well as ancestry", using "appropriate scientific methodologies" that are not "primarily biological or genetic in reference." The race categories include both national-origin groups. Race and ethnicity are considered separate and distinct identities, with Hispanic or Latino origin asked as a separate question. Thus, in addition to their race or races, all respondents are categorized by membership in one of two ethnic categories, which are "Hispanic or Latino" and "Not Hispanic or Latino".
However, the practice of separating "race" and "ethnicity" as different categories has been criticized both by the American Anthropological Association and members of US Commission on Civil Rights. In 1997, OMB issued a Federal Register notice regarding revisions to the standards for the classification of federal data on race and ethnicity. OMB developed race and ethnic standards in order to provide "consistent data on race and ethnicity throughout the Federal Government; the development of the data standards stem in large measure from new responsibilities to enforce civil rights laws." Among the changes, OMB issued the instruction to "mark one or more races" after noting evidence of increasing numbers of interracial children and wanting to capture the diversity in a measurable way and having received requests by people who wanted to be able to acknowledge their or their children's full ancestry rather than identifying with only one group. Prior to this decision, the Census and other government data collections asked people to report only one race.
The OMB states, "many federal programs are put into effect based on the race data obtained from the decennial census. Race data are critical for the basic research behind many policy decisions. States require these data to meet legislative redistricting requirements; the data are needed to monitor compliance with the Voting Rights Act by local jurisdictions". "Data on ethnic groups are important for putting into effect a number of federal statutes. Data on Ethnic Groups are needed by local governments to run programs and meet legislative requirements." The 1790 United States Census was the first census in the history of the United States. The population of the United States was recorded as 3,929,214 as of Census Day, August 2, 1790, as mandated by Article I, Section 2 of the United States Constitution and applicable laws."The law required that every household be visited, that completed census schedules be posted in'two of the most public places within, there to remain for the inspection of all concerned...' and that'the aggregate amount of each description of persons' for every district be transmitted to the president."
This law along with U. S. marshals were responsible for governing the census. One third of the original census data has been lost or destroyed since documentation; the data was lost in 1790–1830 time period and included data from: Connecticut, Maryland, New Hampshire, New York, North Carolina, Rhode Island, South Carolina, Delaware, New Jersey, Virginia. Census data included the name of the head of the family and categorized inhabitants as follows: free white males at least 16 years of age, free white males under 16 years of age, free white females, all other free persons, slaves. Thomas Jefferson the Secretary of State, directed marshals to collect data from all thirteen states, from the Southwest Territory; the census was not conducted in Vermont until 1791, after that state's admission to the Union as the 14th state on March 4 of that year. There was some doubt surrounding the numbers, President George Washington and Thomas Jefferson maintained the population was undercounted; the potential reasons Washington and Jefferson may have thought this could be refusal to participate, poor public transportation and roads, spread out population, restraints of current technology.
No microdata from the 1790 population census is available, but aggregate data for small areas and their compatible cartographic boundary files, can be downloaded from the National Historical Geographic Information System. In 1800 and 1810, the age question regarding free white males was more detailed; the 1820
Colorado is a state of the Western United States encompassing most of the southern Rocky Mountains as well as the northeastern portion of the Colorado Plateau and the western edge of the Great Plains. It is the 8th most extensive and 21st most populous U. S. state. The estimated population of Colorado was 5,695,564 on July 1, 2018, an increase of 13.25% since the 2010 United States Census. The state was named for the Colorado River, which early Spanish explorers named the Río Colorado for the ruddy silt the river carried from the mountains; the Territory of Colorado was organized on February 28, 1861, on August 1, 1876, U. S. President Ulysses S. Grant signed Proclamation 230 admitting Colorado to the Union as the 38th state. Colorado is nicknamed the "Centennial State" because it became a state one century after the signing of the United States Declaration of Independence. Colorado is bordered by Wyoming to the north, Nebraska to the northeast, Kansas to the east, Oklahoma to the southeast, New Mexico to the south, Utah to the west, touches Arizona to the southwest at the Four Corners.
Colorado is noted for its vivid landscape of mountains, high plains, canyons, plateaus and desert lands. Colorado is part of the western and southwestern United States, is one of the Mountain States. Denver is most populous city of Colorado. Residents of the state are known as Coloradans, although the antiquated term "Coloradoan" is used. Colorado is notable for its diverse geography, which includes alpine mountains, high plains, deserts with huge sand dunes, deep canyons. In 1861, the United States Congress defined the boundaries of the new Territory of Colorado by lines of latitude and longitude, stretching from 37°N to 41°N latitude, from 102°02'48"W to 109°02'48"W longitude. After 158 years of government surveys, the borders of Colorado are now defined by 697 boundary markers and 697 straight boundary lines. Colorado and Utah are the only states that have their borders defined by straight boundary lines with no natural features; the southwest corner of Colorado is the Four Corners Monument at 36°59'56"N, 109°2'43"W.
This is the only place in the United States where four states meet: Colorado, New Mexico and Utah. The summit of Mount Elbert at 14,440 feet elevation in Lake County is the highest point in Colorado and the Rocky Mountains of North America. Colorado is the only U. S. state that lies above 1,000 meters elevation. The point where the Arikaree River flows out of Yuma County and into Cheyenne County, Kansas, is the lowest point in Colorado at 3,317 feet elevation; this point, which holds the distinction of being the highest low elevation point of any state, is higher than the high elevation points of 18 states and the District of Columbia. A little less than half of Colorado is flat and rolling land. East of the Rocky Mountains are the Colorado Eastern Plains of the High Plains, the section of the Great Plains within Nebraska at elevations ranging from 3,350 to 7,500 feet; the Colorado plains are prairies but include deciduous forests and canyons. Precipitation averages 15 to 25 inches annually. Eastern Colorado is presently farmland and rangeland, along with small farming villages and towns.
Corn, hay and oats are all typical crops. Most villages and towns in this region boast both a grain elevator. Irrigation water is available from subterranean sources. Surface water sources include the South Platte, the Arkansas River, a few other streams. Subterranean water is accessed through artesian wells. Heavy use of wells for irrigation caused underground water reserves to decline. Eastern Colorado hosts considerable livestock, such as hog farms. 70% of Colorado's population resides along the eastern edge of the Rocky Mountains in the Front Range Urban Corridor between Cheyenne and Pueblo, Colorado. This region is protected from prevailing storms that blow in from the Pacific Ocean region by the high Rockies in the middle of Colorado; the "Front Range" includes Denver, Fort Collins, Castle Rock, Colorado Springs, Pueblo and other townships and municipalities in between. On the other side of the Rockies, the significant population centers in Western Colorado are the cities of Grand Junction and Montrose.
The Continental Divide of the Americas extends along the crest of the Rocky Mountains. The area of Colorado to the west of the Continental Divide is called the Western Slope of Colorado. West of the Continental Divide, water flows to the southwest via the Colorado River and the Green River into the Gulf of California. Within the interior of the Rocky Mountains are several large parks which are high broad basins. In the north, on the east side of the Continental Divide is the North Park of Colorado; the North Park is drained by the North Platte River, which flows north into Nebraska. Just to the south of North Park, but on the western side of the Continental Divide, is the Middle Park of Colorado, drained by the Colorado River; the South Park of Colorado is the region of the headwaters of the South Platte River. In southmost Colorado is the large San Luis Valley, where the headwaters of the Rio Grande are located; the valley sits between the Sangre De Cristo Mountains and San Juan Mountains, consists of large desert lands that run into the mountains.
The Rio Grande drains due south into New Mexico and Texas. Across the Sangre de Cristo Range to the east of the S
Germans are a Germanic ethnic group native to Central Europe, who share a common German ancestry and history. German is the shared mother tongue of a substantial majority of ethnic Germans; the English term Germans has referred to the German-speaking population of the Holy Roman Empire since the Late Middle Ages. Since the outbreak of the Protestant Reformation within the Holy Roman Empire, German society has been characterized by a Catholic-Protestant divide. Of 100 million native speakers of German in the world 80 million consider themselves Germans. There are an additional 80 million people of German ancestry in the United States, Argentina, South Africa, the post-Soviet states, France, each accounting for at least 1 million. Thus, the total number of Germans lies somewhere between 100 and more than 150 million, depending on the criteria applied. Today, people from countries with German-speaking majorities most subscribe to their own national identities and may or may not self-identify as ethnically German.
The German term Deutsche originates from the Old High German word diutisc, referring to the Germanic "language of the people". It is not clear how if at all, the word was used as an ethnonym in Old High German. Used as a noun, ein diutscher in the sense of "a German" emerges in Middle High German, attested from the second half of the 12th century; the Old French term alemans is taken from the name of the Alamanni. It was loaned into Middle English as almains in the early 14th century; the word Dutch is attested in English from the 14th century, denoting continental West Germanic dialects and their speakers. While in most Romance languages the Germans have been named from the Alamanni, the Old Norse and Estonian names for the Germans were taken from that of the Saxons. In Slavic languages, the Germans were given the name of němьci with a meaning "foreigner, one who does not speak "; the English term Germans is only attested from the mid-16th century, based on the classical Latin term Germani used by Julius Caesar and Tacitus.
It replaced Dutch and Almains, the latter becoming obsolete by the early 18th century. The Germans are a Germanic people. Part of the Holy Roman Empire, around 300 independent German states emerged during its decline after the Peace of Westphalia in 1648 ending the Thirty Years War; these states formed into modern Germany in the 19th century. The concept of a German ethnicity is linked to Germanic tribes of antiquity in central Europe; the early Germans originated on the North German Plain as well as southern Scandinavia. By the 2nd century BC, the number of Germans was increasing and they began expanding into eastern Europe and southward into Celtic territory. During antiquity these Germanic tribes remained separate from each other and did not have writing systems at that time. In the European Iron Age the area, now Germany was divided into the La Tène horizon in Southern Germany and the Jastorf culture in Northern Germany. By 55 BC, the Germans had reached the Danube river and had either assimilated or otherwise driven out the Celts who had lived there, had spread west into what is now Belgium and France.
Conflict between the Germanic tribes and the forces of Rome under Julius Caesar forced major Germanic tribes to retreat to the east bank of the Rhine. Roman emperor Augustus in 12 BC ordered the conquest of the Germans, but the catastrophic Roman defeat at the Battle of the Teutoburg Forest resulted in the Roman Empire abandoning its plans to conquer Germania. Germanic peoples in Roman territory were culturally Romanized, although much of Germania remained free of direct Roman rule, Rome influenced the development of German society the adoption of Christianity by the Germans who obtained it from the Romans. In Roman-held territories with Germanic populations, the Germanic and Roman peoples intermarried, Roman and Christian traditions intermingled; the adoption of Christianity would become a major influence in the development of a common German identity. The first major public figure to speak of a German people in general, was the Roman figure Tacitus in his work Germania around 100 AD; however an actual united German identity and ethnicity did not exist and it would take centuries of development of German culture until the concept of a German ethnicity began to become a popular identity.
The Germanic peoples during the Migrations Period came into contact with other peoples. The Limes Germanicus was breached in AD 260. Migrating Germanic tribes commingled with the local Gallo-Roman populations in what is now Swabia and Bavaria; the arrival of the Huns in Europe resulted in Hun conquest of large parts of Eastern Europe, the Huns were allies of the Roman Empire who fought against Germanic tribes, but the Huns cooperated with the Germanic tribe of the Ostrogoths, large numbers of Germans lived within the lands of the Hunnic Empire of
1890 United States Census
The Eleventh United States Census was taken beginning June 2, 1890. It determined the resident population of the United States to be 62,979,766—an increase of 25.5 percent over the 50,189,209 persons enumerated during the 1880 census. The data was tabulated by machine for the first time; the data reported that the distribution of the population had resulted in the disappearance of the American frontier. Most of the 1890 census materials were destroyed in a 1921 fire and fragments of the US census population schedule exist only for the states of Alabama, Illinois, New Jersey, New York, North Carolina, South Dakota, Texas, the District of Columbia; this was the first census in which a majority of states recorded populations of over one million, as well as the first in which multiple cities – New York as of 1880, Philadelphia – recorded populations of over one million. The census saw Chicago rank as the nation's second-most populous city, a position it would hold until 1990, in which Los Angeles would supplant it.
The 1890 census collected the following information: The 1890 census was the first to be compiled using methods invented by Herman Hollerith and was overseen by Superintendents Robert P. Porter and Carroll D. Wright. Data was entered on a machine readable medium, punched cards, tabulated by machine; the net effect of the many changes from the 1880 census: the larger population, the number of data items to be collected, the Census Bureau headcount, the volume of scheduled publications, the use of Hollerith's electromechanical tabulators, was to reduce the time required to process the census from eight years for the 1880 census to six years for the 1890 census. The total population of 62,947,714, the family, or rough, was announced after only six weeks of processing; the public reaction to this tabulation was disbelief, as it was believed that the "right answer" was at least 75,000,000. The United States census of 1890 showed a total of 248,253 Native Americans living in the United States, down from 400,764 Native Americans identified in the census of 1850.
The 1890 census announced that the frontier region of the United States no longer existed, that the Census Bureau would no longer track the westward migration of the U. S. population. Up to and including the 1880 census, the country had a frontier of settlement. By 1890, isolated bodies of settlement had broken into the unsettled area to the extent that there was hardly a frontier line; this prompted Frederick Jackson Turner to develop his Frontier Thesis. The original data for the 1890 Census is no longer available. All the population schedules were damaged in a fire in the basement of the Commerce Building in Washington, D. C. in 1921. Some 25 % of the materials were presumed another 50 % damaged by smoke and water; the damage to the records led to an outcry for a permanent National Archives. In December 1932, following standard federal record-keeping procedures, the Chief Clerk of the Bureau of the Census sent the Librarian of Congress a list of papers to be destroyed, including the original 1890 census schedules.
The Librarian was asked by the Bureau to identify any records which should be retained for historical purposes, but the Librarian did not accept the census records. Congress authorized destruction of that list of records on February 21, 1933, the surviving original 1890 census records were destroyed by government order by 1934 or 1935; the other censuses for which some information has been lost are the 1810 enumerations. Few sets of microdata from the 1890 census survive, but aggregate data for small areas, together with compatible cartographic boundary files, can be downloaded from the National Historical Geographic Information System. Mayo-Smith, Richmond, "The Eleventh Census of the United States". In: The Economic Journal, Vol. 1, p. 43 - 58 1891 U. S Census Report Contains 1890 Census results Historical US Census data from the U. S. Census Bureau website Hollerith 1890 Census Tabulator by Columbia University "The Fate of the 1890 Population Census" from the National Archives website
Huerfano County, Colorado
Huerfano County is one of the 64 counties in the U. S. state of Colorado. As of the 2010 census, the population was 6,711; the county seat is Walsenburg. The county, whose name comes from the Spanish huérfano meaning "orphan", was named for the Huerfano Butte, a local landmark; the area of Huerfano County boomed early in the 1900s with the discovery of large coal deposits. After large scale World War II coal demand ended in the 1940s Walsenburg and Huerfano saw a steady economic decline through 2015. Huerfano County was one of the original 17 counties created by the Territory of Colorado on November 1, 1861, was larger than its present size. On November 2, 1870, the Colorado General Assembly created Greenwood County from former Cheyenne and Arapaho tribal land and the eastern portion of Huerfano County. There are countless reports of vast New Spain and Native American gold treasures that lay hidden in the hills and mountains of Huerfano County including the Arapahoe Princess Treasure. Two Spanish forts were located in Huerfano County.
According to the U. S. Census Bureau, the county has a total area of 1,593 square miles, of which 1,591 square miles is land and 2.2 square miles is water. The price of property saw an increase of more than 10% after a moratorium on commercial marijuana grows was lifted in July 2015. Pueblo County - northeast Las Animas County - southeast Costilla County - southwest Alamosa County - west Custer County - northwest Saguache County - northwest Greenhorn Mountain Wilderness Lathrop State Park San Isabel National Forest Sangre de Cristo Wilderness Spanish Peaks Wilderness Highway of Legends Scenic Byway The county's tourism board brands the county as "Southern Colorado's Spanish Peaks Country." Visitors are attracted to the Spanish Peaks and the many mountain-related activities they offer, such as mountain climbing, hiking and sightseeing. In addition, the western part of the county offers the peaks of the Sangre de Cristo Range, a range that includes several fourteeners; the towns of La Veta and Cuchara offer lodging.
A new county park — the Cuchara Mountain Park — opened in 2017, repurposing property that used to be the now-defunct Cuchara Ski Resort. Huerfano County is a geologist's paradise. Over 500 dikes surround the Spanish Peaks. Many other geological formations, such as the Dakota Formation, are visible in the county. Lathrop State Park offers hiking, camping and fishing. Adjacent to the park, the city of Walsenburg offers a nine-hole golf course; as of the census of 2000, there were 7,862 people, 3,082 households, 1,920 families residing in the county. The population density was 5 people per square mile. There were 4,599 housing units at an average density of 3 per square mile; the racial makeup of the county was 80.96% White, 2.75% Black or African American, 2.70% Native American, 0.39% Asian, 0.08% Pacific Islander, 9.41% from other races, 3.71% from two or more races. 35.14% of the population were Hispanic or Latino of any race. There were 3,082 households out of which 25.00% had children under the age of 18 living with them, 48.40% were married couples living together, 10.40% had a female householder with no husband present, 37.70% were non-families.
32.80% of all households were made up of individuals and 14.10% had someone living alone, 65 years of age or older. The average household size was 2.25 and the average family size was 2.85. In the county, the population was spread out with 20.90% under the age of 18, 7.30% from 18 to 24, 27.40% from 25 to 44, 27.40% from 45 to 64, 17.00% who were 65 years of age or older. The median age was 42 years. For every 100 females there were 118.80 males. For every 100 females age 18 and over, there were 122.80 males. The median income for a household in the county was $25,775, the median income for a family was $32,664. Males had a median income of $24,209 versus $21,048 for females; the per capita income for the county was $15,242. About 14.10% of families and 18.00% of the population were below the poverty line, including 23.70% of those under age 18 and 11.90% of those age 65 or over. Badito Calumet Cuchara Farista Farisita Gardner La Veta Navajo Ranch Red Wing Walsenburg Outline of Colorado Index of Colorado-related articles National Register of Historic Places listings in Huerfano County, Colorado Huerfano County Government website Colorado County Evolution by Don Stanwyck Spanish Peaks Country
Colorado's 3rd congressional district
Colorado's 3rd congressional district is a congressional district in the U. S. state of Colorado. The district takes in most of the rural Western Slope in the state's western third, with a tendril in the south taking in the southern portions of the Eastern Plains, it includes the cities of Grand Junction and Pueblo. The district is represented by Republican Scott R. Tipton, who defeated Democratic incumbent John Salazar in 2010; the district is rural and Republican. Following the 1990 U. S. Census and associated realignment of Colorado congressional districts, the 3rd Congressional district consisted of Alamosa, Chaffee, Costilla, Delta, Eagle, Grand, Hinsdale, Jackson, Lake, La Plata, Mineral, Montezuma, Ouray, Pitkin, Rio Blanco, Rio Grande, Saguache, San Juan, San Miguel and Summit counties, as well as portions of Douglas and Jefferson counties. Following the 2000 U. S. Census and associated realignment of Colorado congressional districts, the 3rd Congressional district consisted of Alamosa, Conejos, Custer, Dolores, Gunnison, Huerfano, Jackson, La Plata, Las Animas, Mineral, Montezuma, Ouray, Pueblo, Rio Blanco, Rio Grande, Saguache, San Juan, San Miguel counties and most of Otero County.
The district has two major population centers in Grand Pueblo. The two cities and their surrounding rural areas provide a competitive arena for congressional races. Grand Junction, on the Western Slope, is a Republican stronghold while Pueblo, a town with a large Latino population and a unionized workforce, provides a base of support for Democrats; the district leaned Republican in the 1990s, but in recent years has become more competitive. George W. Bush received 55% of the vote in the district in 2004 while John McCain won the district in 2008 50%–47%. Election results from presidential races As of May 2017, there are three former members of the U. S. House of Representatives from Colorado's 3rd congressional district who are living at this time; the most recent representative to die was Ray Kogovsek on April 30, 2017. Colorado's congressional districts List of United States congressional districts Martis, Kenneth C.. The Historical Atlas of Political Parties in the United States Congress. New York: Macmillan Publishing Company.
Martis, Kenneth C.. The Historical Atlas of United States Congressional Districts. New York: Macmillan Publishing Company. Congressional Biographical Directory of the United States 1774–present