United States Census Bureau
The United States Census Bureau is a principal agency of the U. S. Federal Statistical System, responsible for producing data about the American people and economy; the Census Bureau is part of the U. S. Department of Commerce and its director is appointed by the President of the United States; the Census Bureau's primary mission is conducting the U. S. Census every ten years, which allocates the seats of the U. S. House of Representatives to the states based on their population; the Bureau's various censuses and surveys help allocate over $400 billion in federal funds every year and it helps states, local communities, businesses make informed decisions. The information provided by the census informs decisions on where to build and maintain schools, transportation infrastructure, police and fire departments. In addition to the decennial census, the Census Bureau continually conducts dozens of other censuses and surveys, including the American Community Survey, the U. S. Economic Census, the Current Population Survey.
Furthermore and foreign trade indicators released by the federal government contain data produced by the Census Bureau. Article One of the United States Constitution directs the population be enumerated at least once every ten years and the resulting counts used to set the number of members from each state in the House of Representatives and, by extension, in the Electoral College; the Census Bureau now conducts a full population count every 10 years in years ending with a zero and uses the term "decennial" to describe the operation. Between censuses, the Census Bureau makes population projections. In addition, Census data directly affects how more than $400 billion per year in federal and state funding is allocated to communities for neighborhood improvements, public health, education and more; the Census Bureau is mandated with fulfilling these obligations: the collecting of statistics about the nation, its people, economy. The Census Bureau's legal authority is codified in Title 13 of the United States Code.
The Census Bureau conducts surveys on behalf of various federal government and local government agencies on topics such as employment, health, consumer expenditures, housing. Within the bureau, these are known as "demographic surveys" and are conducted perpetually between and during decennial population counts; the Census Bureau conducts economic surveys of manufacturing, retail and other establishments and of domestic governments. Between 1790 and 1840, the census was taken by marshals of the judicial districts; the Census Act of 1840 established a central office. Several acts followed that revised and authorized new censuses at the 10-year intervals. In 1902, the temporary Census Office was moved under the Department of Interior, in 1903 it was renamed the Census Bureau under the new Department of Commerce and Labor; the department was intended to consolidate overlapping statistical agencies, but Census Bureau officials were hindered by their subordinate role in the department. An act in 1920 changed the date and authorized manufacturing censuses every two years and agriculture censuses every 10 years.
In 1929, a bill was passed mandating the House of Representatives be reapportioned based on the results of the 1930 Census. In 1954, various acts were codified into Title 13 of the US Code. By law, the Census Bureau must count everyone and submit state population totals to the U. S. President by December 31 of any year ending in a zero. States within the Union receive the results in the spring of the following year; the United States Census Bureau defines four statistical regions, with nine divisions. The Census Bureau regions are "widely used...for data collection and analysis". The Census Bureau definition is pervasive. Regional divisions used by the United States Census Bureau: Region 1: Northeast Division 1: New England Division 2: Mid-Atlantic Region 2: Midwest Division 3: East North Central Division 4: West North Central Region 3: South Division 5: South Atlantic Division 6: East South Central Division 7: West South Central Region 4: West Division 8: Mountain Division 9: Pacific Many federal, state and tribal governments use census data to: Decide the location of new housing and public facilities, Examine the demographic characteristics of communities and the US, Plan transportation systems and roadways, Determine quotas and creation of police and fire precincts, Create localized areas for elections, utilities, etc.
Gathers population information every 10 years The United States Census Bureau is committed to confidentiality, guarantees non-disclosure of any addresses or personal information related to individuals or establishments. Title 13 of the U. S. Code establishes penalties for the disclosure of this information. All Census employees must sign an affidavit of non-disclosure prior to employment; the Bureau cannot share responses, addresses or personal information with anyone including United States or foreign government
Lake Oahe is a large reservoir behind Oahe Dam on the Missouri River. The lake has an area of 370,000 acres and a maximum depth of 205 ft. By volume, it is the fourth-largest reservoir in the US. Lake Oahe has a length of 231 mi and has a shoreline of 2,250 mi. 51 recreation areas are located along Lake Oahe, 1.5 million people visit the reservoir every year. The lake is named for the 1874 Oahe Indian Mission. Lake Oahe begins just north of Pierre, South Dakota and extends nearly as far north as Bismarck, North Dakota. Mobridge, South Dakota is located on the eastern shore of the central portion of the lake. Bridges over Lake Oahe include US Route 212 west of Gettysburg, South Dakota and US Route 12 at Mobridge; the former town of Forest City has been flooded beneath Lake Oahe, about 9 miles west of Gettysburg. Prehistoric archaeological sites have been explored in the area, including Molstad Village near Mobridge, it dates to before the emergence of the Arikara and Mandan as separate peoples, has been designated as a National Historic Landmark.
Species of fish in the reservoir include walleye, northern pike, channel catfish, smallmouth bass. Chinook salmon, native to the Pacific Northwest, are artificially maintained in Lake Oahe and are a popular target for anglers; the lake supports populations of the endangered pallid sturgeon. There are 50 public recreation areas. Many of these areas offer boat ramp facilities, campgrounds, picnic areas, hiking trails, along with access for hunting and fishing opportunities; some of the recreation areas include: Oahe Downstream Recreation Area Cow Creek Recreation Area Okobojo Point Recreation Area West Whitlock Recreation Area Indian Creek Recreation Area Revheim Bay Recreation Area West Pollock Recreation Area Beaver Creek Recreation Area Hazelton Recreation Area Both the Cheyenne River Indian Reservation and the Standing Rock Indian Reservation occupy much of the western shoreline of Lake Oahe. Two possible burial sites of Sitting Bull, a Sioux leader, are located along Lake Oahe. One is near North Dakota, while the other is near Mobridge.
The shoreline and public lands around Lake Oahe contain various artifacts and cultural resources important to many Native American tribes that have lived and traveled through the Missouri River Basin and the Lake Oahe area. All artifacts, including fossils and other objects are prohibited from damaging; the U. S. Army Corps of Engineers, along with other Federal and Tribal Law Enforcement officers enforce the unauthorized collection and damaging of culturally important sites and artifacts through the Antiquities Act, National Historic Preservation Act, Archaeological Resources Protection Act of 1979, Native American Graves Protection and Repatriation Act. Penalties for violations can include fines, up to Federal prison sentences. In the 1960s, the Army Corps of Engineers and the Bureau of Reclamation built five large dams on the Missouri River, implemented the Pick–Sloan Missouri Basin Program, forcing Native Americans to relocate from flooded areas. Over 200,000 acres on the Standing Rock Reservation and the Cheyenne River Reservation in South Dakota were flooded by the Oahe Dam alone.
As of 2015, poverty remains a problem for the displaced populations in the Dakotas, who are still seeking compensation for the loss of the towns submerged under Lake Oahe, the loss of their traditional ways of life. Lake Oahe became a point of contention in protests to block the Dakota Access Pipeline; the construction project has been controversial for its environmental impacts, several Native American tribes in the Dakotas and Iowa have opposed the project. These include the Meskwaki. In 2016 a group from the Standing Rock Indian Reservation brought a petition to the U. S. Army Corps of Engineers and sued for an injunction to stop the project. On December 4, 2016 USACE denied the easement that "would allow the Dakota Access Pipeline to cross under Lake Oahe" and Jo-Ellen Darcy, the United States Assistant Secretary of the Army "said she based her decision on a need to explore alternate routes for the Dakota Access Pipeline crossing." Darcy said "that the consideration of alternative routes would be best accomplished through an Environmental Impact Statement with full public input and analysis."President Trump soon thereafter issued "a memorandum and an executive order asking USACE to expedite its consideration of the company’s application for an easement to start construction."
The USACE subsequently "withdrew its call for the environmental study." On 7 February 2017, the USACE approved an easement through Lake Oahe. On 9 February 2017, the Cheyenne River Sioux filed the first legal challenge to the easement, citing an 1851 treaty and interference with the religious practices of the tribe. List of dams and reservoirs in North Dakota List of lakes in South Dakota Lake Oahe, U. S. Army Corps of Engineers Corps Lakes - Lake Oahe South Dakota Department of Game and Parks North Dakota Department of Parks and Recreation North Dakota Department of Game and Fish
The United States of America known as the United States or America, is a country composed of 50 states, a federal district, five major self-governing territories, various possessions. At 3.8 million square miles, the United States is the world's third or fourth largest country by total area and is smaller than the entire continent of Europe's 3.9 million square miles. With a population of over 327 million people, the U. S. is the third most populous country. The capital is Washington, D. C. and the largest city by population is New York City. Forty-eight states and the capital's federal district are contiguous in North America between Canada and Mexico; the State of Alaska is in the northwest corner of North America, bordered by Canada to the east and across the Bering Strait from Russia to the west. The State of Hawaii is an archipelago in the mid-Pacific Ocean; the U. S. territories are scattered about the Pacific Ocean and the Caribbean Sea, stretching across nine official time zones. The diverse geography and wildlife of the United States make it one of the world's 17 megadiverse countries.
Paleo-Indians migrated from Siberia to the North American mainland at least 12,000 years ago. European colonization began in the 16th century; the United States emerged from the thirteen British colonies established along the East Coast. Numerous disputes between Great Britain and the colonies following the French and Indian War led to the American Revolution, which began in 1775, the subsequent Declaration of Independence in 1776; the war ended in 1783 with the United States becoming the first country to gain independence from a European power. The current constitution was adopted in 1788, with the first ten amendments, collectively named the Bill of Rights, being ratified in 1791 to guarantee many fundamental civil liberties; the United States embarked on a vigorous expansion across North America throughout the 19th century, acquiring new territories, displacing Native American tribes, admitting new states until it spanned the continent by 1848. During the second half of the 19th century, the Civil War led to the abolition of slavery.
By the end of the century, the United States had extended into the Pacific Ocean, its economy, driven in large part by the Industrial Revolution, began to soar. The Spanish–American War and World War I confirmed the country's status as a global military power; the United States emerged from World War II as a global superpower, the first country to develop nuclear weapons, the only country to use them in warfare, a permanent member of the United Nations Security Council. Sweeping civil rights legislation, notably the Civil Rights Act of 1964, the Voting Rights Act of 1965 and the Fair Housing Act of 1968, outlawed discrimination based on race or color. During the Cold War, the United States and the Soviet Union competed in the Space Race, culminating with the 1969 U. S. Moon landing; the end of the Cold War and the collapse of the Soviet Union in 1991 left the United States as the world's sole superpower. The United States is the world's oldest surviving federation, it is a representative democracy.
The United States is a founding member of the United Nations, World Bank, International Monetary Fund, Organization of American States, other international organizations. The United States is a developed country, with the world's largest economy by nominal GDP and second-largest economy by PPP, accounting for a quarter of global GDP; the U. S. economy is post-industrial, characterized by the dominance of services and knowledge-based activities, although the manufacturing sector remains the second-largest in the world. The United States is the world's largest importer and the second largest exporter of goods, by value. Although its population is only 4.3% of the world total, the U. S. holds 31% of the total wealth in the world, the largest share of global wealth concentrated in a single country. Despite wide income and wealth disparities, the United States continues to rank high in measures of socioeconomic performance, including average wage, human development, per capita GDP, worker productivity.
The United States is the foremost military power in the world, making up a third of global military spending, is a leading political and scientific force internationally. In 1507, the German cartographer Martin Waldseemüller produced a world map on which he named the lands of the Western Hemisphere America in honor of the Italian explorer and cartographer Amerigo Vespucci; the first documentary evidence of the phrase "United States of America" is from a letter dated January 2, 1776, written by Stephen Moylan, Esq. to George Washington's aide-de-camp and Muster-Master General of the Continental Army, Lt. Col. Joseph Reed. Moylan expressed his wish to go "with full and ample powers from the United States of America to Spain" to seek assistance in the revolutionary war effort; the first known publication of the phrase "United States of America" was in an anonymous essay in The Virginia Gazette newspaper in Williamsburg, Virginia, on April 6, 1776. The second draft of the Articles of Confederation, prepared by John Dickinson and completed by June 17, 1776, at the latest, declared "The name of this Confederation shall be the'United States of America'".
The final version of the Articles sent to the states for ratification in late 1777 contains the sentence "The Stile of this Confederacy shall be'The United States of America'". In June 1776, Thomas Jefferson wrote the phrase "UNITED STATES OF AMERICA" in all capitalized letters in the headline of his "original Rough draught" of the Declaration of Independence; this draft of the document did not surface unti
Grand River National Grassland
Grand River National Grassland is a National Grassland in northwestern South Dakota, United States. It is named for the Grand River; the North and South forks of the rivers meet in the grassland. It has a land area of 154,783 acres. In descending order of acreage it lies in parts of Perkins and Ziebach counties; the portion in Corson County lies within the Standing Rock Indian Reservation. The portion in Ziebach County lies within the Cheyenne River Indian Reservation; the grassland is administered by the USDA-Forest Service as part of the Dakota Prairie Grasslands from offices in Bismarck, North Dakota. There is a local Ranger District office in South Dakota; the DPG is part of Region One of the Forest Service. The Regional Headquarters is in Missoula, MT; the District has a variety of habitats: mixed grass prairie, river bottom, green ash draws, sand dunes along the South Fork of the Grand River, sandstone outcrops and buttes, claypan areas with a few small playas in Corson County. 20,000 acres of the District is old cropland, reseeded to crested wheatgrass.
There have been 476 species from 78 families. For birding enthusiasts, there is a comprehensive birding checklist of the District; the District has a 7-mile hiking, horseback riding and mountain biking trail south of Lemmon about 12 miles called the Blacktail Trail. It is a loop trail; the trail head is located adjacent to State Highway 73. The trail takes you through mixed grass prairie and badlands and passes near one of only two aspen stands on the District. A picnic area and fishing area is located at the trailhead. A good gravel road connects the trial head to the highway; the District shares part of the shoreline of Shadehill reservoir. This area is accessible from State Highway west of the highway; this part of the lakeshore is adjacent to the South Cabin sites. Camping is free. A good gravel shoreline is available for fishing; as you travel on most of the grasslands, it is all open to livestock grazing, so you will have to share it with cattle. This includes the roadways. Recent projects on the District include planting cottonwoods along the South Fork of the Grand River and revamping crested wheatgrass stands with native seedings.
Dakota Prairie Grasslands Map showing free dispersed camping areas and location of Hugh Glass campground List of plant species of the Grand River National Grassland List of bird species of the Grand River National Grassland and Cedar River National Grassland. Hugh Glass Lakeside Use Area
Houston Museum of Natural Science
The Houston Museum of Natural Science is a natural history museum located on the northern border of Hermann Park in Houston, United States. The museum was established in 1909 by the Houston Museum and Scientific Society, an organization whose goals were to provide a free institution for the people of Houston focusing on education and science. Museum attendance totals over two million visitors each year; the museum complex consists of a central facility with four floors of natural science halls and exhibits, the Burke Baker Planetarium, the Cockrell Butterfly Center, the Wortham Giant Screen Theatre. The museum is one of the most popular in the United States and ranks just below New York City's American Museum of Natural History and Metropolitan Museum of Art and the M. H. de Young Memorial Museum in San Francisco in most attendance amongst non-Smithsonian museums. Much of the museum's popularity is attributed to its large number of guest exhibits; the initial museum organization was called the Houston Museum and Scientific Society, Inc. and was created in 1909.
The museum's primary collection was acquired between 1914 and 1930. This included the purchase of a natural-history collection assembled by Henry Philemon Attwater and a donation from collector John Milsaps, the latter of which formed the core of the museum's gem and mineral collection. First housed in Houston's city auditorium, the collection was subsequently housed in the Central Library for seven years, at a site in the Houston Zoo in 1929; the museum's now wide-ranging education programs began in 1947 and, in its second year, hosted 12,000 children. The museum was renamed the Houston Museum of Natural Science in 1960. Construction of the current facility in Hermann Park began in 1964 and was completed in 1969. By the 1980s, the museum's permanent displays included a dinosaur exhibit, a space museum, exhibits on geology, petroleum science and geography. In 1988, the Challenger Learning Center was opened in memory of the Space Shuttle Challenger crewmembers that were lost during the shuttle's tenth mission.
The center's aim is to teach visitors about space exploration. The Wortham IMAX Theatre and the offsite George Observatory were opened in 1989. Museum attendance was more than one million visitors in 1990. HMNS trustees determined that new state-of-the-art facilities, additional space, renovations to current exhibits were needed because of the increased attendance. Between 1991 and 1994, a number of exhibit halls were renovated and the expansion of the Sterling Hall of Research was completed; the Cockrell Butterfly Center and the Brown Hall of Entomology opened in July 1994. In March 2007, the museum opened the HMNS Woodlands X-ploration Station, located in the Woodlands Mall; the facility was home to an interactive Dig Pit, where children could excavate a mock Triceretops, a variety of living exhibits and minerals. The Woodlands location closed on September 7, 2009, less than a month before HMNS opened a satellite museum in Sugar Land, Texas. HMNS celebrated its 100th year in 2009. During that year, the museum offered a multitude of family programs, free events, kids' classes as part of the "Fun Hundred" celebration.
On October 3, 2009, HMNS opened its satellite museum in Sugar Land. The building and surrounding land that became HMNS at Sugar Land was once part of the Central Unit, a Texas Department of Criminal Justice prison, unoccupied for several decades. In March 2012, the Wortham IMAX Theatre was converted from 70 mm film to 3D digital and renamed the Wortham Giant Screen Theatre. In June 2012, HMNS opened a new 230,000 square foot wing to house its paleontology hall, more than doubling the size of the original museum. Paleoartist, Julius Csotonyi, created fourteen murals based on concept drawings by HMNS Curator of Paleontology, Robert Bakker, for the new paleontology hall; the Morian Hall of Paleontology contains more than 60 large skeleton mounts, including four Tyrannosaurus rex and three large Quetzalcoatlus. The Foucault pendulum; the length of the pendulum's cable is over 60 feet long. Cullen Hall of Gems & Minerals, featuring a large exhibit of over 750 crystallized mineral specimens and rare gemstones.
Lester and Sue Smith Gem Vault, showcasing some of the most exquisite finely cut gems in jewelry. Farish Hall of Texas Wildlife exhibits animals and wildlife native to Texas; the hall contains a video wall that displays the plants and topography of the seven biotic regions of the state. Evelyn and Herbert Frensley Hall of African Wildlife, a display of taxidermied animals, including one of only two okapis exhibited in North America. Opening in 1969, the hall allows visitors to explore the seven biomes of the continent of Africa. Contains over 120 specimens, including 42 species of birds and 28 species of mammals are on display. Strake Hall of Malacology, with many specimens of mollusks. Morian Hall of Paleontology, the largest paleontology hall in the United States. Contains over 60 major skeleton mounts, including three Tyrannosaurus rex, a Diplodocus and the most complete Triceratops skeleton discovered, it houses one of the largest trilobite collections in existence. Robert Bakker serves as Curator of Paleontology.
John P. McGovern Hall of the Americas, showing more than 50 cultures worth of pre-Columbian archaeological artifacts. Welch Chemistry Hall, with interactive chemistry related displays and a periodic table of elements with a sample of each element. Wiess Energy Hall, with displays themed around energetics, petroleum geology, oil exploration. Renovated and expanded in 2017, the hall consists of 16 sections, including a working replica of an offsho
Time in the United States
Time in the United States, by law, is divided into nine standard time zones covering the states and its possessions, with most of the United States observing daylight saving time for the spring and fall months. The time zone boundaries and DST observance are regulated by the Department of Transportation. Official and precise timekeeping services are provided by two federal agencies: the National Institute of Standards and Technology; the clocks run by these services are kept synchronized with each other as well as with those of other international timekeeping organizations. It is the combination of the time zone and daylight saving rules, along with the timekeeping services, which determines the legal civil time for any U. S. location at any moment. Before the adoption of four standard time zones for the continental United States, many towns and cities set their clocks to noon when the sun passed their local meridian, pre-corrected for the equation of time on the date of observation, to form local mean solar time.
Noon occurred at different times but time differences between distant locations were noticeable prior to the 19th century because of long travel times and the lack of long-distance instant communications prior to the development of the telegraph. The use of local solar time became awkward as railways and telecommunications improved. American railroads maintained many different time zones during the late 1800s; each train station set its own clock making it difficult to coordinate train schedules and confusing passengers. Time calculation became a serious problem for people traveling by train, according to the Library of Congress; every city in the United States used a different time standard so there were more than 300 local sun times to choose from. Time zones were therefore a compromise, relaxing the complex geographic dependence while still allowing local time to be approximate with mean solar time. Railroad managers tried to address the problem by establishing 100 railroad time zones, but this was only a partial solution to the problem.
Weather service chief Cleveland Abbe had needed to introduce four standard time zones for his weather stations, an idea which he offered to the railroads. Operators of the new railroad lines needed a new time plan that would offer a uniform train schedule for departures and arrivals. Four standard time zones for the continental United States were introduced at noon on November 18, 1883, when the telegraph lines transmitted time signals to all major cities. In October 1884, the International Meridian Conference at Washington DC adopted a proposal which stated that the prime meridian for longitude and timekeeping should be one that passes through the centre of the transit instrument at the Greenwich Observatory in the United Kingdom; the conference therefore established the Greenwich Meridian as the prime meridian and Greenwich Mean Time as the world's time standard. The US time-zone system grew from this, in which all zones referred back to GMT on the prime meridian. In 1960, the International Radio Consultative Committee formalized the concept of Coordinated Universal Time, which became the new international civil time standard.
UTC is, within about 1 second, mean solar time at 0°. UTC does not observe daylight saving time. For most purposes, UTC is considered interchangeable with GMT, but GMT is no longer defined by the scientific community. UTC is one of several related successors to GMT. Standard time zones in the United States are defined at the federal level by law 15 USC §260; the federal law establishes the transition dates and times at which daylight saving time occurs, if observed. It is the authority of the Secretary of Transportation, in coordination with the states, to determine which regions will observe which of the standard time zones and if they will observe daylight saving time; as of August 9, 2007, the standard time zones are defined in terms of hourly offsets from UTC. Prior to this they were based upon the mean solar time at several meridians 15° apart west of Greenwich. Only the full-time zone names listed below are official. View the standard time zone boundaries here; the United States uses nine standard time zones.
As defined by US law they are: From east to west, the four time zones of the contiguous United States are: Eastern Time Zone, which comprises the states on the Atlantic coast and the eastern two thirds of the Ohio Valley. Central Time Zone, which comprises the Gulf Coast, Mississippi Valley, most of the Great Plains. Mountain Time Zone, which comprises the states and portions of states that include the Rocky Mountains and the western quarter of the Great Plains. Pacific Time Zone, which comprises the states on the Pacific coast, plus Nevada and the Idaho panhandle. Alaska Time Zone, which comprises most of the state of Alaska. Hawaii-Aleutian Time Zone, which includes Hawaii and most of the length of the Aleutian Islands chain. Samoa Time Zone, which comprises American Samoa. Chamorro Time Zone, which comprises Guam and the Northern Mariana Islands. Atlantic Time Zone, which comprises Puerto Rico and the US Virgin Islands; some United States Minor Outlying Islands are outside the time zones defined by 15 U.
S. C. § exist in waters defined by Nautical time. In practice, military crews may
Ziebach County, South Dakota
Ziebach County is a county in the U. S. state of South Dakota. As of the 2010 United States Census, the population was 2,801, its county seat is Dupree. It is the last county in the United States alphabetically; the county's per-capita income makes it the fourth-poorest county in the United States. A county named Ziebach was created in Dakota Territory in 1877. However, after South Dakota became a state, this county was dissolved in 1898 and its areas absorbed by Pennington and Stanley counties; the present Ziebach County was created by the SD Legislature on February 1, 1911, was organized by April 22. The 1911 Ziebach County encompassed parts of the former counties of Schnasse and Sterling, which were the last three extinct counties of South Dakota to cease to exist, it was named for Frank M. Ziebach, a political figure in the Dakota Territory during the territorial period from 1861 to 1889; the area had been used by trappers and in 1907 part was a reservation for Ute Indians displaced from Utah and Wyoming.
Early in the 20th Century cattle were raised in substantial numbers, but when the railroad bypassed the area this industry declined. Limited homesteading occurred on the more fertile lands; the Cheyenne River flows east-northeastward along the southern boundary of Ziebach County. The Moreau River flows eastward through the upper portion of the county, Cherry Creek flows southeastward through the lower portion, draining the area into the Cheyenne River; the terrain is composed of semi-arid rolling hills interrupted by buttes and carved by drainages and gullies devoted to agriculture and cattle. The terrain slopes to the east; the county has a total area of 1,971 square miles, of which 1,961 square miles is land and 9.3 square miles is water. The entire county lies within the Cheyenne River Indian Reservation; the balance of the county, along its extreme northern county line, lies within the Standing Rock Indian Reservation. It is one of five South Dakota counties that lie on Indian reservations.
Ziebach County is part of the Great Plains and is characterized by rolling grasslands and numerous buttes. The buttes form the highest points of elevation in Ziebach County: Grand River National Grassland Bedners Dam K C Dam Rattlesnake Lake As of the 2000 United States Census, there were 2,519 people, 741 households, 594 families in the county; the population density was 1.3 people per square mile. There were 879 housing units at an average density of 0.4 per square mile. The racial makeup of the county was 72.29% Native American, 26.40% White, 0.08% Asian, 0.12% from other races, 1.11% from two or more races. 0.99% of the population were Hispanic or Latino of any race. There were 741 households out of which 47.2% had children under the age of 18 living with them, 47.9% were married couples living together, 23.8% had a female householder with no husband present, 19.8% were non-families. 17.4% of all households were made up of individuals and 5.1% had someone living alone, 65 years of age or older.
The average household size was 3.40 and the average family size was 3.81. The county population contained 40.6% under the age of 18, 10.8% from 18 to 24, 24.7% from 25 to 44, 16.5% from 45 to 64, 7.5% who were 65 years of age or older. The median age was 24 years. For every 100 females there were 97.0 males. For every 100 females age 18 and over, there were 98.1 males. The median income for a household in the county was $18,063, the median income for a family was $18,672. Males had a median income of $19,038 versus $21,167 for females; the per capita income for the county was $7,463. About 45.20% of families and 49.90% of the population were below the poverty line, including 61.10% of those under age 18 and 27.20% of those age 65 or over. In 2009, it was one of 17 counties in the United States; as of the 2010 United States Census, there were 2,801 people, 836 households, 638 families in the county. The population density was 1.4 inhabitants per square mile. There were 987 housing units at an average density of 0.5 per square mile.
The racial makeup of the county was 74.9% American Indian, 21.8% white, 0.2% black or African American, 0.1% Asian, 0.1% from other races, 3.0% from two or more races. Those of Hispanic or Latino origin made up 3.1% of the population. Of the 836 households, 53.7% had children under the age of 18 living with them, 39.0% were married couples living together, 29.3% had a female householder with no husband present, 23.7% were non-families, 20.9% of all households were made up of individuals. The average household size was 3.35 and the average family size was 3.82. The median age was 25.4 years. The median income for a household in the county was $27,578 and the median income for a family was $22,857. Males had a median income of $28,954 versus $24,327 for females; the per capita income for the county was $11,069. About 41.9% of families and 46.0% of the population were below the poverty line, including 56.1% of those under age 18 and 22.9% of those age 65 or over. Dupree Eagle Butte Ziebach County government does not include subdivision into townships.
The county is divided into three areas of unorganized territory: Dupree, North Ziebach, South Ziebach. Ziebach County has traditionally been a swing county. Only Ronald Reagan in 1980 and Barack Obama in 2008 have topped sixty percent for either major party in the past six decades. National Register of Historic Places listings in Ziebach County, South Dakota