There are 29 counties in the U.S. state of Utah

Utah

Utah is a state in the Western United States. It was the 45th state to join the Union, on January 4, 1896. Approximately 80% of Utah's 2,763,885 people live along the Wasatch Front, centering on Salt Lake City. This leaves vast expanses of the state nearly uninhabited, making the population the...

. There were originally seven counties established under the provisional State of Deseret

State of Deseret

The State of Deseret was a proposed state of the United States, propositioned in 1849 by Latter-day Saint settlers in Salt Lake City. The provisional state existed for slightly over two years and was never recognized by the United States government...

 in 1849: Davis

Davis County, Utah

Davis County is a county located in the U.S. state of Utah. As of 2010 the population was 306,479, a 28.2% increase over the 2000 figure of 238,994. It was named for Daniel C. Davis, captain in the Mormon Battalion. The county is part of the Ogden–Clearfield Metropolitan Statistical Area as...

, Iron

Iron County, Utah

As of the census of 2000, there were 33,779 people, 10,627 households, and 8,076 families residing in the county. The population density was 10 people per square mile . There were 13,618 housing units at an average density of 4 per square mile...

, Sanpete

Sanpete County, Utah

Sanpete County is a county located in the U.S. state of Utah. The population according to the 2010 U.S. Census was 27,822. It was possibly named for a Ute Indian chief named Sanpitch, which was corrupted to Sanpete. Its county seat is Manti and its largest city is Ephraim.-Geography:According to...

, Salt Lake

Salt Lake County, Utah

Salt Lake County is a county located in the U.S. state of Utah. It had a population of 1,029,655 at the 2010 census. Its county seat and largest city is Salt Lake City, the state capital. It occupies Salt Lake Valley, as well as parts of the surrounding mountains, the Oquirrh Mountains to the west...

, Tooele

Tooele County, Utah

Tooele County is a county located in the U.S. state of Utah. As of 2000, the population was 40,735 and by 2005 was estimated at 51,311. Its county seat and largest city is Tooele....

, Utah

Utah County, Utah

Utah County is a county located in the U.S. state of Utah. As of 2000, the population was 368,536 and by 2008 was estimated at 530,837. It was named for the Spanish name for the Ute Indians. The county seat and largest city is Provo...

, and Weber

Weber County, Utah

Weber County is a county located in the U.S. state of Utah, occupying a stretch of the Wasatch Front, part of the eastern shores of Great Salt Lake, and much of the rugged Wasatch Mountains. As of the 2000 census, the population was 196,533, an increase of 24.1% over its population in 1990. By...

. The Territory of Utah

Utah Territory

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....

 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

Juab County, Utah

Juab County is a county located in the U.S. state of Utah. As of 2000 the population was 8,238, and by 2005 had been estimated at 9,113. It was named from an Indian word meaning thirsty valley, or possibly only valley. Its county seat and largest city is Nephi.Juab County is part of the...

, Millard

Millard County, Utah

Millard County is a county located in the U.S. state of Utah. In 2010, its population was 12,420. It was named for Millard Fillmore, thirteenth President of the United States. Its county seat is Fillmore and the largest city is Delta.-Geography:...

, and Washington

Washington County, Utah

As of the census of 2000, there were 90,354 people, 29,939 households, and 23,442 families residing in the county. The population density was 37 people per square mile . There were 36,478 housing units at an average density of 15 per square mile...

. 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

Daggett County, Utah

Daggett County is a county located in the northeastern corner of the U.S. state of Utah. The population was 1,059 at the 2010 census. It was named for Ellsworth Daggett, the first surveyor-general of Utah. Its county seat and only municipality is Manila. There is one other small community, Dutch...

 and Duchesne

Duchesne County, Utah

Duchesne County is a county located in the U.S. state of Utah. As of 2010 the population was 18,607, a 29.5% increase over the 2000 figure of 14,371. Its county seat is Duchesne and the largest city is Roosevelt.-Geography:...

. They were created by popular vote and by gubernatorial proclamation after Utah became a state. Present-day Duchesne County encompassed an Indian reservation

Indian reservation

An American Indian reservation is an area of land managed by a Native American tribe under the United States Department of the Interior's Bureau of Indian Affairs...

 that was created in 1861. The reservation was opened to homesteaders

Homestead Act

A homestead act is one of three United States federal laws that gave an applicant freehold title to an area called a "homestead" – typically 160 acres of undeveloped federal land west of the Mississippi River....

 in 1905 and the county was created in 1913. Due to bad roads and weather, residents in present-day Daggett County had to travel 400 to 800 mi (643.7 to 1,287.5 km) to conduct business in Vernal

Vernal, Utah

Vernal, Uintah County's largest city, is located in eastern Utah near the Colorado State Line, and 175 miles east of Salt Lake City. It is bordered on the north by the Uinta Mountains, one of the few mountains ranges in the world which lie in an east-west rather than the usual north to south...

, the county seat for Uintah County

Uintah County, Utah

This page deals with the Utah County. For the Wyoming County, see Uinta County, Wyoming.Uintah County is a county located in the U.S. state of Utah. As of 2000 the population was 25,224 and by 2009 was estimated at 31,536. It was named for the Ute Indians, the tribe that lives in the basin. Its...

. 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

Wasatch Front

The Wasatch Front is a metropolitan region in the north-central part of the U.S. state of Utah. It consists of a chain of cities and towns stretched along the Wasatch Range from approximately Santaquin in the south to Brigham City in the north...

 counties of Salt Lake, Utah, Davis, and Weber. Salt Lake County was the largest county in the state with a population of 1,029,655, followed by Utah County with 516,564, Davis County with 306,479 and Weber County with 231,236. Daggett County was the least populated with 1,059 people. The largest county in land area is San Juan County

San Juan County, Utah

As of the current census of 2010, there were 14,746 people and 4,505 households. The racial and ethnic composition of the population was 50.4% Native American, 45.8% white, 0.3% Asian, 0.2% African American and 2.3% reporting two or more races...

 with 7821 mi2 and Davis County is the smallest with 304 mi2.

The Federal Information Processing Standard

Federal Information Processing Standard

A Federal Information Processing Standard is a publicly announced standardization developed by the United States federal government for use in computer systems by all non-military government agencies and by government contractors, when properly invoked and tailored on a contract...

 (FIPS) code, which is used by the United States government to uniquely identify states and counties, is provided with each county. Utah's FIPS code is 49, which when combined with any county code would be written as 49XXX. In the FIPS code column in the table below, each FIPS code links to the most current census data for that county.

Counties

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Former counties

There were ten counties in the Territory of Utah that were absorbed by other states or Utah counties.

County	Established	Superseded	Etymology	Present location
Carson County	1854	1861	Named for the Carson River, a 150 miles (241.4 km) river in Nevada and California California California is a state located on the West Coast of the United States. It is by far the most populous U.S. state, and the third-largest by land area...  that originates from the Sierra Nevada Mountains	Nevada Nevada Nevada is a state in the western, mountain west, and southwestern regions of the United States. With an area of and a population of about 2.7 million, it is the 7th-largest and 35th-most populous state. Over two-thirds of Nevada's people live in the Las Vegas metropolitan area, which contains its...
Cedar County	1856	1862	Named for the numerous cedar trees growing in the area (which are actually juniper trees Juniper Junipers are coniferous plants in the genus Juniperus of the cypress family Cupressaceae. Depending on taxonomic viewpoint, there are between 50-67 species of juniper, widely distributed throughout the northern hemisphere, from the Arctic, south to tropical Africa in the Old World, and to the... )	Utah County Utah County, Utah Utah County is a county located in the U.S. state of Utah. As of 2000, the population was 368,536 and by 2008 was estimated at 530,837. It was named for the Spanish name for the Ute Indians. The county seat and largest city is Provo...
Desert County	1852	1862	Named for the surrounding desert Desert A desert is a landscape or region that receives an extremely low amount of precipitation, less than enough to support growth of most plants. Most deserts have an average annual precipitation of less than...	Box Elder County Box Elder County, Utah Box Elder County is a county located in the U.S. state of Utah. It lies on the north end of the Great Salt Lake, covering a large area north to the Idaho border and west to the Nevada border. Included in this area are large tracts of barren desert, contrasted by high, forested mountains. The... , Tooele County Tooele County, Utah Tooele County is a county located in the U.S. state of Utah. As of 2000, the population was 40,735 and by 2005 was estimated at 51,311. Its county seat and largest city is Tooele....  and Nevada Nevada Nevada is a state in the western, mountain west, and southwestern regions of the United States. With an area of and a population of about 2.7 million, it is the 7th-largest and 35th-most populous state. Over two-thirds of Nevada's people live in the Las Vegas metropolitan area, which contains its...
Greasewood County	1856	1862	Named for the greasewood Greasewood Greasewood, Sarcobatus, is a genus of one or two species of flowering plants. Traditionally it has been treated in the family Chenopodiaceae, but the APG II system, of 2003, places it in the family Sarcobataceae....  plant growing in the area	Box Elder County Box Elder County, Utah Box Elder County is a county located in the U.S. state of Utah. It lies on the north end of the Great Salt Lake, covering a large area north to the Idaho border and west to the Nevada border. Included in this area are large tracts of barren desert, contrasted by high, forested mountains. The...
Green River County	1852	1872	Named for the Green River Green River (Utah) The Green River, located in the western United States, is the chief tributary of the Colorado River. The watershed of the river, known as the Green River Basin, covers parts of Wyoming, Utah, and Colorado. The Green River is long, beginning in the Wind River Mountains of Wyoming and flowing... , a 730 miles (1,174.8 km) tributary of the Colorado River Colorado River The Colorado River , is a river in the Southwestern United States and northwestern Mexico, approximately long, draining a part of the arid regions on the western slope of the Rocky Mountains. The watershed of the Colorado River covers in parts of seven U.S. states and two Mexican states...  that runs through Wyoming Wyoming Wyoming is a state in the mountain region of the Western United States. The western two thirds of the state is covered mostly with the mountain ranges and rangelands in the foothills of the Eastern Rocky Mountains, while the eastern third of the state is high elevation prairie known as the High... , Colorado Colorado Colorado is a U.S. state that encompasses much of the Rocky Mountains as well as the northeastern portion of the Colorado Plateau and the western edge of the Great Plains...  and Utah	Cache, Weber Weber County, Utah Weber County is a county located in the U.S. state of Utah, occupying a stretch of the Wasatch Front, part of the eastern shores of Great Salt Lake, and much of the rugged Wasatch Mountains. As of the 2000 census, the population was 196,533, an increase of 24.1% over its population in 1990. By... , Morgan Morgan County, Utah Morgan County is a county located in the U.S. state of Utah. As of 2010 the population was 9,469. It was named for Jedediah Morgan Grant, father of Heber J. Grant, who served as president of the Church of Jesus Christ of Latter-day Saints... , Davis Davis County, Utah Davis County is a county located in the U.S. state of Utah. As of 2010 the population was 306,479, a 28.2% increase over the 2000 figure of 238,994. It was named for Daniel C. Davis, captain in the Mormon Battalion. The county is part of the Ogden–Clearfield Metropolitan Statistical Area as... , Wasatch Wasatch County, Utah Wasatch County is a county located in the U.S. state of Utah. It was named for a Ute Indian word meaning mountain pass or low place in the high mountains. Its county seat and largest city is Heber City.The county is governed by a county council with an appointed county manager.Wasatch County is... , Summit Summit County, Utah Summit County is a county located in the U.S. state of Utah, occupying a rugged and mountainous area. In 2010 its population was 36,324. It is part of the Salt Lake City Metropolitan Statistical Area as well as the Salt Lake City–Ogden–Clearfield Combined Statistical Area. The county is... , Duchesne Duchesne County, Utah Duchesne County is a county located in the U.S. state of Utah. As of 2010 the population was 18,607, a 29.5% increase over the 2000 figure of 14,371. Its county seat is Duchesne and the largest city is Roosevelt.-Geography:... , Carbon Carbon County, Utah Carbon County is a county located in the U.S. state of Utah. Named for the major coal deposits in the area, the county seat and largest city, is Price. Carbon County is the second largest natural gas producer in Utah , with 94 billion cubic feet produced in 2008. As of 2010 the population was... , and Utah Utah County, Utah Utah County is a county located in the U.S. state of Utah. As of 2000, the population was 368,536 and by 2008 was estimated at 530,837. It was named for the Spanish name for the Ute Indians. The county seat and largest city is Provo...  Counties, and Wyoming Wyoming Wyoming is a state in the mountain region of the Western United States. The western two thirds of the state is covered mostly with the mountain ranges and rangelands in the foothills of the Eastern Rocky Mountains, while the eastern third of the state is high elevation prairie known as the High...  and Colorado Colorado Colorado is a U.S. state that encompasses much of the Rocky Mountains as well as the northeastern portion of the Colorado Plateau and the western edge of the Great Plains...
Humboldt County Humboldt County, Nevada Humboldt County is a county located in the U.S. state of Nevada. As of 2007, the population was estimated to be 18,052. Its county seat is Winnemucca.The county was the site of an arrest in 2000 that led to the U.S. Supreme Court decision Hiibel v...	1856	1861	Named for the Humboldt River Humboldt River The Humboldt River runs through northern Nevada in the western United States. At approximately long it is the second longest river in the Great Basin, after the Bear River. It has no outlet to the ocean, but instead empties into the Humboldt Sink... , a 300 miles (482.8 km) river in Nevada and longest river in the Great Basin Great Basin The Great Basin is the largest area of contiguous endorheic watersheds in North America and is noted for its arid conditions and Basin and Range topography that varies from the North American low point at Badwater Basin to the highest point of the contiguous United States, less than away at the...	Nevada Nevada Nevada is a state in the western, mountain west, and southwestern regions of the United States. With an area of and a population of about 2.7 million, it is the 7th-largest and 35th-most populous state. Over two-thirds of Nevada's people live in the Las Vegas metropolitan area, which contains its...
Malad County	1856	1862	Named for the Malad River Malad River (Utah) The Malad River is a tributary of the Bear River in southeastern Idaho and northern Utah in the United States. The river flows southward, beginning northwest of Malad City, Idaho, crosses the Idaho-Utah state line just north of Portage, Utah, flows through Tremonton, and empties into the Bear... , the name being French French language French is a Romance language spoken as a first language in France, the Romandy region in Switzerland, Wallonia and Brussels in Belgium, Monaco, the regions of Quebec and Acadia in Canada, and by various communities elsewhere. Second-language speakers of French are distributed throughout many parts...  for "sickly"	Box Elder County Box Elder County, Utah Box Elder County is a county located in the U.S. state of Utah. It lies on the north end of the Great Salt Lake, covering a large area north to the Idaho border and west to the Nevada border. Included in this area are large tracts of barren desert, contrasted by high, forested mountains. The...
Rio Virgin County	1869	1872	Named for the Virgin River Virgin River The Virgin River is a tributary of the Colorado River in the U.S. states of Utah, Nevada, and Arizona. The river is about long. It was designated Utah's first wild and scenic river in 2009, during the centennial celebration of Zion National Park.-Course:... , a 160 miles (257.5 km) long tributary of the Colorado River located in southern Utah and Nevada	Washington County Washington County, Utah As of the census of 2000, there were 90,354 people, 29,939 households, and 23,442 families residing in the county. The population density was 37 people per square mile . There were 36,478 housing units at an average density of 15 per square mile... , Nevada Nevada Nevada is a state in the western, mountain west, and southwestern regions of the United States. With an area of and a population of about 2.7 million, it is the 7th-largest and 35th-most populous state. Over two-thirds of Nevada's people live in the Las Vegas metropolitan area, which contains its...  and Arizona Arizona Arizona ; is a state located in the southwestern region of the United States. It is also part of the western United States and the mountain west. The capital and largest city is Phoenix...
St. Mary's County	1856	1861	Named after the Mary's River, which was later renamed to the Humboldt River	Nevada Nevada Nevada is a state in the western, mountain west, and southwestern regions of the United States. With an area of and a population of about 2.7 million, it is the 7th-largest and 35th-most populous state. Over two-thirds of Nevada's people live in the Las Vegas metropolitan area, which contains its...
Shambip County Shambip County, Utah Territory Shambip County was a county in Utah Territory from 1856 to 1862.The county was created by the Utah Territorial Legislature in January 1856. It consisted primarily of the Rush Valley. Its county seat was located at the town of Shambip on Clover Creek, which previously had been known as Johnson...	1856	1862	Goshute Goshute The Goshutes are a band of Western Shoshone Native American. There are two federally recognized Goshute tribes today: the Confederated Tribes of the Goshute Reservation and Skull Valley Band of Goshute Indians of Utah of the Skull Valley Indian Reservation.-Name:The name Goshute derived either from...  Native American Tribe word for Rush Lake Rush Lake (Utah) Rush Lake is a shallow saline lake in Tooele County in the U.S. state of Utah. It is a 16,800 year old remnant of Lake Bonneville, an ancient lake that formed approximately 32,000 years ago...	Tooele County Tooele County, Utah Tooele County is a county located in the U.S. state of Utah. As of 2000, the population was 40,735 and by 2005 was estimated at 51,311. Its county seat and largest city is Tooele....