List of counties in Colorado
Former counties
Table:
Counties formerly within the area of the State of Colorado

County

Territory or State

Created

Superseded

History

Taos County

Territory of New Mexico

185201091852-01-09

186102281861-02-28

Originally one of the seven partidos of the Spanish, and later Mexican, province of Santa Fe de Nuevo México. One of the nine original counties created by the Territory of New Mexico in 1852. Excluded from the new Territory of Colorado in 1861.

Great Salt Lake County

Territory of Utah

185203031852-03-03

186102281861-02-28

Created in 1852, and excluded from the new Territory of Colorado in 1861.

Green River County

Territory of Utah

185203031852-03-03

186102281861-02-28

Created in 1852, but never organized. Dissolved in 1857, but recreated in 1859. Excluded from the new Territory of Colorado in 1861, and the Territory of Wyoming in 1868. Finally dissolved in 1872.

Iron County

Territory of Utah

185203031852-03-03

186102281861-02-28

Created in 1852, and excluded from the new Territory of Colorado in 1861.

Sanpete County

Territory of Utah

185203031852-03-03

186102281861-02-28

Created in 1852, and excluded from the new Territory of Colorado in 1861.

Utah County

Territory of Utah

185203031852-03-03

186102281861-02-28

Created in 1852, and excluded from the new Territory of Colorado in 1861.

Washington County

Territory of Utah

185203031852-03-03

186102281861-02-28

Created in 1852, and excluded from the new Territory of Colorado in 1861.

Arapahoe County

Territory of Kansas

185508251855-08-25

186101291861-01-29

Created in 1855, but never organized. Reverted to unorganized territory when Kansas joined the Union in 1861.

Beaver County

Territory of Utah

185601051856-01-05

186102281861-02-28

Split from Iron and Millard counties in 1856. Excluded from the new Territory of Colorado in 1861.

Broderick County

Territory of Kansas

185902071859-02-07

186101291861-01-29

Split from Arapahoe County in 1859, but never organized. Reverted to unorganized territory when Kansas joined the Union in 1861.

El Paso County

Territory of Kansas

185902071859-02-07

186101291861-01-29

Split from Arapahoe County in 1859, but never organized. Reverted to unorganized territory when Kansas joined the Union in 1861.

Fremont County

Territory of Kansas

185902071859-02-07

186101291861-01-29

Split from Arapahoe County in 1859, but never organized. Reverted to unorganized territory when Kansas joined the Union in 1861.

Montana County

Territory of Kansas

185902071859-02-07

186101291861-01-29

Split from Arapahoe County in 1859, but never organized. Reverted to unorganized territory when Kansas joined the Union in 1861.

Oro County

Territory of Kansas

185902071859-02-07

186101291861-01-29

Split from Arapahoe County in 1859, but never organized. Reverted to unorganized territory when Kansas joined the Union in 1861.

Peketon County

Territory of Kansas

185902071859-02-07

186101291861-01-29

Created in 1859, but never organized. Reverted to unorganized territory when Kansas joined the Union in 1861.

Arrappahoe County

Territory of Jefferson

185911281859-11-28

186102281861-02-28

One of the 12 counties created by the extralegal Territory of Jefferson in 1859.

Cheyenne County

Territory of Jefferson

185911281859-11-28

186102281861-02-28

One of the 12 counties created by the extralegal Territory of Jefferson in 1859.

El Paso County

Territory of Jefferson

185911281859-11-28

186102281861-02-28

One of the 12 counties created by the extralegal Territory of Jefferson in 1859.

Fountain County

Territory of Jefferson

185911281859-11-28

186102281861-02-28

One of the 12 counties created by the extralegal Territory of Jefferson in 1859.

Heele County

Territory of Jefferson

185911281859-11-28

186102281861-02-28

One of the 12 counties created by the extralegal Territory of Jefferson in 1859.

Consulting the accompanying table as well as the relevant paragraphs provided at the end.

Give the answer to the question: In which territory or state is the county whose county seat was Denver City ? Return your answer as JSON: {"answer": "YOUR ANSWER"}. Do not introduce information beyond the provided sources.

Taos County is a county in the U.S. state of New Mexico . As of the 2010 census , the population was 32,937 . Its county seat is Taos . The county was formed in 1852 as one of the original nine counties in New Mexico Territory . Taos County comprises the Taos , NM Micropolitan Statistical Area .
The Territory of New Mexico was an organized incorporated territory of the United States that existed ( with varying boundaries ) from September 9 , 1850 , until January 6 , 1912 , when the remaining extent of the territory was admitted to the Union as the State of New Mexico , making it the longest-lived organized incorporated territory of the United States , lasting approximately 62 years .
The Viceroyalty of New Spain ( Spanish : Virreinato de Nueva España Spanish pronunciation : [ βirejˈnato ðe ˈnweβa esˈpaɲa ] ( listen ) ) was an integral territorial entity of the Spanish Empire , established by Habsburg Spain during the Spanish colonization of the Americas . It covered a huge area that included territories in North America , South America , Asia and Oceania . It originated in 1521 after the fall of Tenochtitlan , the main event of the Spanish conquest , which did not properly end until much later , as its territory continued to grow to the north . It was officially created on 8 March 1535 as a Kingdom ( Spanish : reino ) , the first of four viceroyalties Spain created in the Americas . Its first viceroy was Antonio de Mendoza y Pacheco , and the capital of the kingdom was Mexico City , established on the ancient Tenochtitlan . It included what is now Mexico plus the current U.S. states of California , Nevada , Colorado , Utah , New Mexico , Arizona , Texas , Oregon , Washington , Florida and parts of Idaho , Montana , Wyoming , Kansas , Oklahoma , Alabama , Mississippi and Louisiana ; as well as the southwestern part of British Columbia of present-day Canada ; plus the Captaincy General of Guatemala ( which included the current countries of Guatemala , the Mexican state of Chiapas , Belize , Costa Rica , El Salvador , Honduras , Nicaragua ) ; the Captaincy General of Cuba ( current Cuba , Dominican Republic , Puerto Rico and Trinidad and Tobago ) ; and the Captaincy General of the Philippines ( including the Philippines , Guam , the Northern Mariana Islands , the Caroline Islands , the Federated States of Micronesia , Palau , the Marshall Islands and the short lived Spanish Formosa in modern-day northern Taiwan , as well as during a century the island of Tidore and the briefly occupied Sultanate of Ternate , both in modern-day Indonesia ) . Other kingdoms of the Spanish Empire bordered New Spain and were given the right of appeal to the most senior representative of the king . These kingdoms were independent of New Spain ( separate from New Spain itself ) : Nueva Galicia ( 1530 ) ; Captaincy General of Guatemala ( 1540 ) ; Nueva Vizcaya ( 1562 ) ; New Kingdom of León ( 1569 ) ; Santa Fe de Nuevo México ( 1598 ) ; Nueva Extremadura ( 1674 ) and Nuevo Santander ( 1746 ) . New Spain proper was itself organized in captaincies general . There were four captaincies : Captaincy General of the Philippines ( 1574 ) , Captaincy General of Cuba , Captaincy General of Puerto Rico and Captaincy General of Santo Domingo . These independent kingdoms and territorial subdivisions each had their own governor and captain generals ( who in New Spain was the viceroy himself , who added this title to his other dignities ) . In Guatemala , Santo Domingo and Nueva Galicia , these officials were called presiding governors , since they were leading royal audiences .
The history of New Mexico was based on both archeological evidence , attesting to varying cultures of humans occupying the area of New Mexico since approximately 9200 BC , and written records . The earliest peoples had migrated from northern areas of North America after leaving Siberia via the Bering Land Bridge . Artifacts and architecture demonstrate ancient complex cultures in this region . The first written records of the region were made by the Spanish Conquistadors , who encountered Native American Pueblos when they explored the area in the 16th century . Since that time , the Spanish Empire , Mexico , and the United States ( since 1848 ) have claimed control of the area . The area was governed as New Mexico Territory until 1912 , when it was admitted as a state . The relatively isolated state had an economy dependent on mining . Its residents and government suffered from a reputation for corruption and extreme traditionalism . New Mexico introduced the atomic age in 1945 , as the first nuclear weapons were developed by the federal government in the research center it established at Los Alamos . Ethnically the state has historically been divided among Native American , Hispanic and Anglo elements - the latter mostly migrants from Texas in the late years .
Santa Fe de Nuevo México ( English : Saint Faith of New Mexico ; shortened as Nuevo México or Nuevo Méjico , and translated as New Mexico in English ) was a province of the Viceroyalty of New Spain , and later a territory of independent Mexico . The first capital was San Juan de los Caballeros ( at San Gabriel de Yungue-Ouinge ) from 1598 until 1610 , and from 1610 onward the capital was La Villa Real de la Santa Fe de San Francisco de Asís . The naming , capital , the Palace of the Governors , and rule of law were retained as the New Mexico Territory , and the subsequent U.S. State of New Mexico , became a part of the United States . The New Mexican citizenry , primarily consisting of Hispano , Pueblo , Navajo , Apache , and Comanche peoples , became citizens of the United States as a result of the Treaty of Guadalupe Hidalgo . Nuevo México is often incorrectly believed to have taken its name from the nation of Mexico . However , it was named by Spanish explorers who believed the area contained wealthy Amerindian cultures similar to those of the Aztec Empire ( centered in the Valley of Mexico ) , and called the land the Santa Fe de Nuevo México .
The Territory of Colorado was an organized incorporated territory of the United States that existed from February 28 , 1861 , until August 1 , 1876 , when it was admitted to the Union as the State of Colorado . The territory was organized in the wake of the Pike 's Peak Gold Rush of 1858-1861 , which brought the first large concentration of white settlement to the region . The organic act creating the territory was passed by Congress and signed by President James Buchanan on February 28 , 1861 , during the secessions by Southern states that precipitated the American Civil War . The boundaries of the Colorado Territory were identical with those of the current State of Colorado . The organization of the territory helped solidify Union control over a mineral-rich area of the Rocky Mountains . Statehood was regarded as fairly imminent , but territorial ambitions for statehood were thwarted at the end of 1865 by a veto by President Andrew Johnson . Statehood for the territory was a recurring issue during the Ulysses Grant administration , with Grant advocating statehood against a less willing Congress during Reconstruction . The Colorado Territory ceased to exist when the State of Colorado was admitted to the Union in 1876 . East of the divide , the new territory included the western portion of the Kansas Territory , as well as some of the southwestern Nebraska Territory , and a small parcel of the northeastern New Mexico Territory . On the western side of the divide , the territory included much of the eastern Utah Territory , all of which was strongly controlled by the Ute and Shoshoni . The Eastern Plains were held much more loosely by the intermixed Cheyenne and Arapaho , as well as by the Pawnee , Comanche and Kiowa . In 1861 , ten days before the establishment of the territory , the Arapaho and Cheyenne agreed with the U.S. to give up most their areas of the plains to white settlement but were allowed to live in their larger traditional areas , so long as they could tolerate homesteaders near their camps .
Salt Lake County is a county in the U.S. state of Utah . As of the 2010 United States Census , the population was 1,029,655 , ( 1,152,633 as of July 1 2018 ) making it the most populous county in Utah . Its county seat and largest city is Salt Lake City , the state capital . The county was created in 1850 . Salt Lake County is the 37th most populated county in the United States and is one of four counties in the Rocky Mountains to make it into the top 100 . ( Others being Denver County and El Paso County , Colorado and Clark County , Nevada ) Salt Lake County occupies the Salt Lake Valley , as well as parts of the surrounding mountains , the Oquirrh Mountains to the west and the Wasatch Range to the east ( essentially the entire Jordan River watershed north of the Traverse Mountains ) . In addition , the northwestern section of the county includes part of the Great Salt Lake . The county is noted for its ski resorts ; Salt Lake City won the bid to host the 2002 Winter Olympics . Salt Lake County is the central county of the Salt Lake City metropolitan area .
The Territory of Utah was an organized incorporated territory of the United States that existed from September 9 , 1850 , until January 4 , 1896 , when the final extent of the territory was admitted to the Union as the State of Utah , the 45th state .
There are 29 counties in the U.S. state of Utah . There were originally seven counties established under the provisional State of Deseret in 1849 : Davis , Iron , Sanpete , Salt Lake , Tooele , Utah , and Weber . The Territory of Utah was created in 1851 with the first territorial legislature meeting from 1851-1852 . The first legislature re-created the original counties from the State of Deseret under territorial law as well as establishing three additional counties : Juab , Millard , and Washington . All other counties were established between 1854 and 1894 by the Utah Territorial Legislature under territorial law except for the last two counties formed , Daggett and Duchesne . They were created by popular vote and by gubernatorial proclamation after Utah became a state . Present-day Duchesne County encompassed an Indian reservation that was created in 1861 . The reservation was opened to homesteaders in 1905 and the county was created in 1913 . Due to dangerous roads , mountainous terrain , and bad weather preventing travel via a direct route , 19th century residents in present-day Daggett County had to travel 400 to 800 miles ( 640 to 1,290 km ) on both stage and rail to conduct business in Vernal , the county seat for Uintah County a mere 50 miles ( 80 km ) away . In 1917 , all Uintah County residents voted to create Daggett County . Based on the 2010 United States Census data , the population of Utah was 2,763,885 . Just over 75% of Utah 's population is concentrated along four Wasatch Front counties of Salt Lake , Utah , Davis , and Weber .
The Territory of Wyoming was an organized incorporated territory of the United States that existed from July 25 , 1868 , until July 10 , 1890 , when it was admitted to the Union as the State of Wyoming . Cheyenne was the territorial capital . The boundaries of the Wyoming Territory were identical to the modern State of Wyoming .
Iron County is a county in southwestern Utah , United States . As of the 2010 United States Census , the population was 46,163 . Its county seat is Parowan , and the largest city is Cedar City . The Cedar City , UT Micropolitan Statistical Area includes all of Iron County .
Sanpete County ( /sænˈpiːt/ san-PEET ) is a county in the U.S. state of Utah . As of the 2010 United States Census , the population was 27,822 . Its county seat is Manti , and its largest city is Ephraim . The county was created in 1850 .
Utah County is a county in the U.S. state of Utah . As of the 2010 United States Census , the population was 516,564 , thus making it Utah 's second-most populous county . The county seat and largest city is Provo , which is the state 's third-largest city . Utah County is part of the Provo-Orem , UT Metropolitan Statistical Area as well as the Salt Lake City-Provo-Orem , UT Combined Statistical Area . In 2010 , the center of population of Utah was in Utah County , in the city of Saratoga Springs . Utah County is one of seven counties in the United States to have the same name as its state .
Washington County is a county in the southwestern corner of Utah , United States . As of the 2010 United States Census , the population was 138,115 , making it the fifth-most populous county in Utah . Its county seat and largest city is St. George . The county was created in 1852 and organized in 1856 . It was named after the first President of the United States , George Washington . Washington County experienced the fifth-highest job-growth rate in the United States at one point . A portion of the Paiute Indian Reservation is in western Washington County . Washington County comprises the St. George , UT Metropolitan Statistical Area .
Arapahoe County was a county of Kansas Territory in the United States that existed from August 25 , 1855 , until Kansas 's admission into the Union on January 29 , 1861 .
The Territory of Kansas was an organized incorporated territory of the United States that existed from May 30 , 1854 , until January 29 , 1861 , when the eastern portion of the territory was admitted to the Union as the free state of Kansas . The territory extended from the Missouri border west to the summit of the Rocky Mountains and from the 37th parallel north to the 40th parallel north . Originally part of Missouri Territory , it was unorganized from 1821 to 1854 . Much of the eastern region of what is now the State of Colorado was part of Kansas Territory . The Territory of Colorado was created to govern this western region of the former Kansas Territory on February 28 , 1861 . The question of whether Kansas was to be a free or a slave state was , according to the Compromise of 1850 and the Kansas-Nebraska Act , to be decided by popular sovereignty , that is , by vote of the Kansans . The question of who were the Kansans who were eligible to vote ended up causing armed conflict , called the Bleeding Kansas period . Both pro-slavery and free-state partisans encouraged and sometimes supported financially emigration to Kansas , so as to influence the vote . During part of the territorial period there were two different territorial legislatures , with two different constitutions , meeting in two different cities ( one capital was burned by partisans of the other capital ) , and two different applications for statehood , one free and one slave , were sent to the U.S. Congress .
Kansas /ˈkænzəs/ ( listen ) is a U.S. state in the Midwestern United States . Its capital is Topeka and its largest city is Wichita , with its most populated county and largest employment center being Johnson County . Kansas is bordered by Nebraska on the north ; Missouri on the east ; Oklahoma on the south ; and Colorado on the west . Kansas is named after the Kansas River , which in turn was named after the Kansa Native Americans who lived along its banks . The tribe 's name ( natively kką : ze ) is often said to mean people of the ( south ) wind although this was probably not the term 's original meaning . For thousands of years , what is now Kansas was home to numerous and diverse Native American tribes . Tribes in the eastern part of the state generally lived in villages along the river valleys . Tribes in the western part of the state were semi-nomadic and hunted large herds of bison . Kansas was first settled by Americans in 1827 with the establishment of Fort Leavenworth . The pace of settlement accelerated in the 1850s , in the midst of political wars over the slavery debate . When it was officially opened to settlement by the U.S. government in 1854 with the Kansas-Nebraska Act , abolitionist Free-Staters from New England and pro-slavery settlers from neighboring Missouri rushed to the territory to determine whether Kansas would become a free state or a slave state . Thus , the area was a hotbed of violence and chaos in its early days as these forces collided , and was known as Bleeding Kansas .
The United States of America ( USA ) , commonly known as the United States ( U.S. or US ) or America , is a country consisting of 50 states , a federal district , five major self-governing territories , and various possessions . [ g ] At 3.8 million square miles ( 9.8 million km2 ) , it is the world 's third or fourth-largest country by total area [ b ] and is slightly smaller than the entire continent of Europe . Most of the country is located in central North America between Canada and Mexico . With an estimated population of over 328 million , the U.S. is the third most populous country in the world . The capital is Washington , D.C. , and the most populous city is New York City . 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 led to the American Revolutionary War lasting between 1775 and 1783 , leading to independence . The United States embarked on a vigorous expansion across North America throughout the 19th century - gradually acquiring new territories , displacing Native Americans , and admitting new states - until by 1848 it spanned the continent . During the second half of the 19th century , the American Civil War led to the abolition of slavery in the United States . The Spanish-American War and World War I confirmed the country 's status as a global military power .
Beaver County is a county in west central Utah , United States . As of the 2010 United States Census , the population was 6,629 . Its county seat and largest city is Beaver . The county was named for the abundance of beavers in the area .
Millard County ( /ˈmɪlərd/ MIL-ərd ) is a county in the U.S. state of Utah . As of the 2010 United States Census , the population was 12,503 . Its county seat is Fillmore , and the largest city is Delta .
Broderick County was a county of the United States Territory of Kansas that existed for two years from February 7 , 1859 to January 29 , 1861 . It was named for David C. Broderick , a California senator .
El Paso County was a county of the United States Territory of Kansas that existed for two years from February 7 , 1859 , to January 29 , 1861 .
Fremont County was a county of the United States Territory of Kansas that existed for two years from February 7 , 1859 , to January 29 , 1861 .
Montana County was a county of the United States Territory of Kansas that existed from February 2 , 1859 to January 29 , 1861 , when Kansas joined the Union as a state .
Oro County was a county of the United States Territory of Kansas that existed from February 7 , 1859 to January 29 , 1861 , when Kansas joined the Union as a state .
Peketon County was a county of the United States Territory of Kansas that existed from February 7 , 1859 to January 29 , 1861 , when Kansas joined the Union as a state .
Arapahoe County was a county of the extralegal United States Territory of Jefferson that existed from November 28 , 1859 , until February 28 , 1861 . The county name was also spelled Arapaho County , Arapahoe County , Arrapahoe County , and Arappahoe County . The county seat was Denver City .
The Territory of Jefferson was an extralegal and unrecognized United States territory that existed from October 24 , 1859 until the creation of the Colorado Territory on February 28 , 1861 . The Jefferson Territory included land officially part of the Kansas Territory , the Nebraska Territory , the New Mexico Territory , the Utah Territory , and the Washington Territory , but the area was remote from the governments of those five territories . The government of the Jefferson Territory , while democratically elected , was never legally recognized by the United States government , although it managed the territory with relatively free rein for 16 months . Many of the laws enacted by the Jefferson Territorial Legislature were reenacted and given official sanction by the new Colorado General Assembly in 1861 .
Cheyenne County was a county of the extralegal United States Territory of Jefferson that existed from November 28 , 1859 , until February 28 , 1861 .
El Paso County was a county of the extralegal United States Territory of Jefferson that existed from November 28 , 1859 , until February 28 , 1861 . The county seat was Colorado City .
Fountain County was a county of the extralegal United States Territory of Jefferson that existed from November 28 , 1859 , until February 28 , 1861 .
Heele County was a county of the extralegal United States Territory of Jefferson that existed from November 28 , 1859 , until February 28 , 1861 . It may also have been known as Steele County .