| Counties of Utah | |
|---|---|
| Location | State of Utah |
| Number | 29 |
| Populations | 956 (Daggett) – 1,216,274 (Salt Lake) |
| Areas | 299 square miles (770 km2) (Davis) – 7,820 square miles (20,300 km2) (San Juan) |
| Government | |
| Subdivisions |
|

There are 29counties in the U.S. state ofUtah.
In 1849, the provisionalState of Deseret established seven counties:Davis,Iron,Sanpete,Salt Lake,Tooele,Utah, andWeber.[1] After theTerritory of Utah was created in 1851, the first territorial legislature (1851–1852) acknowledged those seven and created three more:Juab,Millard, andWashington. Over a 40-year period (1854–1894), the Utah Territorial Legislature established most of the counties that exist today. In the early 20th century, after Utah had become a state, the final two counties were created:Duchesne bygubernatorial proclamation (1913) andDaggett by popular vote (1917).[2] Present-day Duchesne County encompassed anIndian reservation that was created in 1861. The reservation was opened tohomesteaders in 1905 and the county was created in 1913.[3] 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 inVernal, the county seat forUintah County a mere 50 miles (80 km) away. In 1917, all Uintah County residents voted to create Daggett County.[4]
Based on 2024 United States Census data, the population of Utah was 3,503,613. Just under 75% of Utah's population is concentrated along fourWasatch Front counties: Salt Lake, Utah, Davis, and Weber. Salt Lake County was the largest county in the state with a population of 1,216,274, followed by Utah County with 747,234, Davis County with 378,470 and Weber County with 276,118. Daggett County was the least populated with 956 people. The largest county in land area isSan Juan County with 7,821 square miles (20,260 km2) and Davis County is the smallest with 304 square miles (790 km2).[5]
TheFederal Information Processing Standard (FIPS) code, which is used by the United States government to uniquely identify states and counties, is provided with each county.[6] 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.[7]
The Utah Code (Title 17, Chapter 50, Part 5) divides the counties into six classes by population:[8]
The county classes, for example, are used in the Utah legislature in crafting of legislation to distinguish between more urban and rural areas, such as important yet subtle distinctions in how revenue can be distributed. Usually, a bill intended to benefit rural counties would target the counties of the fourth, fifth and sixth class.[9]
Under Utah Code (Title 17, Chapter 52a, Part 2), Utah counties are permitted to choose one of four forms of county government:[10] a three-member full-time commission; a five or seven member expanded commission; a three to nine member (odd-numbered) part-time council with a full-time elected county mayor or a three to nine member (odd-numbered) part-time council with a full-time manager appointed by the council. 23 out of 29 counties are ruled by the standard three-member commission. Of the other six, Cache County was the first change in 1988 to a seven-member council with an elected mayor. Grand County adopted a seven-member council with appointed manager in 1992, followed by Morgan County in 1999 and Wasatch County in 2003. In 1998, Salt Lake County residents approved adopting a nine-member council with elected mayor that began work in 2001.[11] Summit County adopted a five-member council with an appointed manager in 2006.[12]
| County | FIPS code[7] | County seat[2][13] | Est.[2][13] | Origin[2] | Etymology[14] | Population[15] | Area[16] | Map |
|---|---|---|---|---|---|---|---|---|
| Beaver County | 001 | Beaver | Jan 5, 1856 | Part ofIron County[17] | The manybeavers in the area[18] | 7,424 | 2,590 sq mi (6,708 km2) | |
| Box Elder County | 003 | Brigham City | Jan 5, 1856 | Part ofWeber County | The manyBox Elder trees in the area[19] | 64,120 | 5,746 sq mi (14,882 km2) | |
| Cache County | 005 | Logan | Jan 5, 1857 | Part ofWeber County[17] | Caches of furs made byRocky Mountain Fur Company trappers[20] | 145,487 | 1,165 sq mi (3,017 km2) | |
| Carbon County | 007 | Price | Mar 8, 1894 | Part ofEmery County | The vast coal beds in the county[21] | 20,613 | 1,478 sq mi (3,828 km2) | |
| Daggett County | 009 | Manila | Jan 7, 1918 | Part ofSummit andUintah counties | Oliver Ellsworth Daggett (1810–1880), the first Utah Surveyor General[22] | 956 | 697 sq mi (1,805 km2) | |
| Davis County | 011 | Farmington | Oct 5, 1850 | Part ofDeseretGreat Salt Lake andWeber counties | Daniel C. Davis (1804–1850),Mormon Battalion captain[23] | 378,470 | 299 sq mi (774 km2) | |
| Duchesne County | 013 | Duchesne | Jan 4, 1915 | Part ofWasatch County | Uncertain; likely origins are aUte word translated "dark canyon", theFrench and Indian War site ofFort Duquesne (the county's initial settlement was also a fortress), the corrupted name of an area Indian chief, the name ofSociety of the Sacred Heart founderRose Philippine Duchesne, the name of French geographerAndré Duchesne, or the name of French fur trapper and explorer Du Chasne[24] | 20,803 | 3,241 sq mi (8,394 km2) | |
| Emery County | 015 | Castle Dale | Feb 12, 1880 | Part ofSanpete County[25] | George W. Emery (1830–1909), Governor of the Utah Territory from 1875–1880[26] | 10,161 | 4,462 sq mi (11,557 km2) | |
| Garfield County | 017 | Panguitch | Mar 9, 1882 | Part ofIron County | James A. Garfield (1831–1881), President of the United States in 1881[27] | 5,290 | 5,083 sq mi (13,165 km2) | |
| Grand County | 019 | Moab | Mar 13, 1890 | Part ofEmery County | The Grand River, since renamed to theColorado River[28] | 9,788 | 3,672 sq mi (9,510 km2) | |
| Iron County | 021 | Parowan | Jan 31, 1850 | Original county ofState of Deseret | Iron mines west ofCedar City[29] | 65,936 | 3,297 sq mi (8,539 km2) | |
| Juab County | 023 | Nephi | Mar 3, 1852 | Original county ofTerritory of Utah | A Native American word translated "thirsty valley" or "flat plain"[30] | 13,297 | 3,392 sq mi (8,785 km2) | |
| Kane County | 025 | Kanab | Jan 16, 1864 | Part ofWashington County | Thomas L. Kane (1822–1883), U.S. Army officer who spoke in favor of the Mormon migration and settlement of Utah[31] | 8,525 | 3,990 sq mi (10,334 km2) | |
| Millard County | 027 | Fillmore | Oct 4, 1851 | Original county ofTerritory of Utah | Millard Fillmore (1800–1874), President of the United States from 1850 to 1853[32] | 13,572 | 6,572 sq mi (17,021 km2) | |
| Morgan County | 029 | Morgan | Jan 17, 1862 | Part ofDavis,Great Salt Lake,Summit, andWeber counties[33] | Jedediah Morgan Grant (1816–1856), anApostle ofthe Church of Jesus Christ of Latter-day Saints[34] | 13,093 | 609 sq mi (1,577 km2) | |
| Piute County | 031 | Junction | Jan 16, 1865 | Part ofBeaver County | ThePiute tribe of Native Americans who lived in the area[35] | 1,534 | 758 sq mi (1,963 km2) | |
| Rich County | 033 | Randolph | Jan 16, 1864 | Part ofCache County | Charles C. Rich (1809–1883), an Apostle of The Church of Jesus Christ of Latter-day Saints[36] | 2,752 | 1,029 sq mi (2,665 km2) | |
| Salt Lake County | 035 | Salt Lake City | Jan 31, 1850 | Original county ofState of Deseret | TheGreat Salt Lake, the largestterminal lake in the Western Hemisphere[37] | 1,216,274 | 742 sq mi (1,922 km2) | |
| San Juan County | 037 | Monticello | Feb 17, 1880 | Parts ofKane,Iron, andPiute counties | Named for theSan Juan River, a 400-mile (640 km) tributary of the Colorado river located in southernColorado and Utah[38] | 14,601 | 7,820 sq mi (20,254 km2) | |
| Sanpete County | 039 | Manti | Jan 31, 1850 | Original county ofState of Deseret | Uncertain, possibly from aUte Chief named San Pitch[39] | 30,732 | 1,590 sq mi (4,118 km2) | |
| Sevier County | 041 | Richfield | Jan 16, 1865 | Part ofSanpete County | TheSevier River, a 280-mile (450 km) river in central Utah[40] | 22,520 | 1,911 sq mi (4,949 km2) | |
| Summit County | 043 | Coalville | Jan 13, 1854 | Part ofGreat Salt Lake andGreen River counties[41] | High elevations in the county, which includes 39 of Utah's highest peaks[42] | 43,109 | 1,872 sq mi (4,848 km2) | |
| Tooele County | 045 | Tooele | Jan 31, 1850 | Original county ofState of Deseret | Uncertain, either from theGoshute Tribe Chief Tuilla or theTules plant that grew in the marshes[43] | 84,488 | 6,941 sq mi (17,977 km2) | |
| Uintah County | 047 | Vernal | Feb 18, 1880 | Part ofSanpete,Summit, andWasatch counties[44] | The Uintah band of theUte tribe who lived in the area[45] | 38,307 | 4,480 sq mi (11,603 km2) | |
| Utah County | 049 | Provo | Jan 31, 1850 | Original county ofState of Deseret | Yuta, the Spanish name for theUte tribe[46] | 747,234 | 2,003 sq mi (5,188 km2) | |
| Wasatch County | 051 | Heber City | Jan 17, 1862 | Part ofGreat Salt Lake,Green River,Sanpete,Summit, andUtah counties[47] | A Native American word meaning "mountain pass", also the name of theWasatch Range[48] | 37,858 | 1,176 sq mi (3,046 km2) | |
| Washington County | 053 | St. George | Mar 3, 1852 | Original county ofTerritory of Utah | George Washington (1732–1799), President of the United States from 1789 to 1797[49] | 207,943 | 2,426 sq mi (6,283 km2) | |
| Wayne County | 055 | Loa | Mar 10, 1892 | Part ofPiute County | Wayne County, Tennessee[50] | 2,608 | 2,461 sq mi (6,374 km2) | |
| Weber County | 057 | Ogden | Jan 31, 1850 | Original county ofState of Deseret | TheWeber River, a 125 miles (201 km) tributary of the Great Salt Lake[51] | 276,118 | 576 sq mi (1,492 km2) |
There were ten counties in the Territory of Utah that were absorbed by other states or other Utah counties.
| County[2] | Established[2] | Superseded[2] | Etymology | Present location[2] |
|---|---|---|---|---|
| Carson County | January 17, 1854 | March 2, 1861 | Named forKit Carson, an American frontiersman[52] | Nevada |
| Cedar County | January 5, 1856 | January 17, 1862 | Named for the numerous cedar trees growing in the area (which are actuallyjuniper trees)[53][54] | Utah County |
| Desert County | March 3, 1852 | January 17, 1862 | Named for the surroundingdesert | Box Elder County,Tooele County andNevada |
| Greasewood County | January 5, 1856 | January 17, 1862 | Named for thegreasewood plant growing in the area[55] | Box Elder County |
| Green River County | March 3, 1852 | February 16, 1872 | Named for theGreen River, a 730-mile (1,170 km) tributary of theColorado River that runs throughWyoming,Colorado and Utah[56] | Cache,Weber,Morgan,Davis,Wasatch,Summit,Duchesne,Carbon, andUtah Counties, andWyoming andColorado |
| Humboldt County | January 5, 1856 | March 2, 1861 | Named for theHumboldt River, a 300-mile (480 km) river in Nevada and longest river in theGreat Basin[57] | Nevada |
| Malad County | January 5, 1856 | January 17, 1862 | Named for theMalad River, the name beingFrench for "sickly"[58] | Box Elder County |
| Rio Virgen County | February 18, 1869 | February 16, 1872 | Named for theVirgin River (elRio de la Virgen[59]), a 160-mile-long (260 km) tributary of the Colorado River located in southern Utah and Nevada[60] | Washington County,Nevada andArizona |
| St. Mary's County | January 5, 1856 | January 17, 1862 | Named after the Mary's River, which was later renamed to the Humboldt River[61] | Nevada |
| Shambip County | January 12, 1856 | January 17, 1862 | Goshute Native American Tribe word forRush Lake[62] | Tooele County |
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