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Summit County, Utah facts for kids

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Summit County, Utah
Map of Utah highlighting Summit County
Location in the state of Utah
Map of the USA highlighting Utah
Utah's location in the U.S.
Founded 1861
Seat Coalville
Largest City Park City
 - Total
 - Land
 - Water

1,882 sq mi (4,874 km²)
1,872 sq mi (4,848 km²)
10 sq mi (26 km²), 0.5%
 - (2015)
 - Density

19/sq mi (7/km²)
Time zone Mountain: UTC-7/-6
Named for: The summits of the mountains

Summit County is a county located in the U.S. state of Utah, occupying a rugged and mountainous area. As of the 2010 census, the population was 36,324. Its county seat is Coalville, and the largest city is Park City. The county was created in 1854 and later organized in 1861. It is so named because it includes 39 of the highest mountain peaks in Utah.

The county's mean elevation is 8,388 feet (2,557 m) above sea level, which is the second-highest of any county outside Colorado. Owing to its proximity to Salt Lake City, Park City has acquired a reputation as an upscale getaway, bringing new development to the area.

Summit County comprises the Summit Park, UT Micropolitan Statistical Area, which is also included in the Salt Lake City-Provo-Orem, UT Combined Statistical Area.


According to the U.S. Census Bureau, the county has a total area of 1,882 square miles (4,870 km2), of which 1,872 square miles (4,850 km2) is land and 10 square miles (26 km2) (0.5%) is water.

Adjacent counties

National protected areas

  • Ashley National Forest (part)
  • Wasatch National Forest (part)


Historical population
Census Pop.
1860 198
1870 2,512 1,168.7%
1880 4,921 95.9%
1890 7,733 57.1%
1900 9,439 22.1%
1910 8,200 −13.1%
1920 7,862 −4.1%
1930 9,527 21.2%
1940 8,714 −8.5%
1950 6,745 −22.6%
1960 5,673 −15.9%
1970 5,879 3.6%
1980 10,198 73.5%
1990 15,518 52.2%
2000 29,736 91.6%
2010 36,324 22.2%
Est. 2015 39,633 9.1%
U.S. Decennial Census
1790–1960 1900–1990
1990–2000 2010–2014

As of the census of 2000, there were 29,736 people, 10,332 households, and 7,501 families residing in the county. The population density was 16 people per square mile (6.2/km2). There were 17,489 housing units at an average density of 9 per square mile (3.5/km2). The racial makeup of the county was 91.80% White, 0.24% Black or African American, 0.31% Native American, 0.96% Asian, 0.04% Pacific Islander, 5.43% from other races, and 1.21% from two or more races. 8.09% of the population were Hispanic or Latino of any race.

There were 10,332 households out of which 40.80% had children under the age of 18 living with them, 63.50% were married couples living together, 6.20% had a female householder with no husband present, and 27.40% were non-families. 18.40% of all households were made up of individuals and 3.20% had someone living alone who was 65 years of age or older. The average household size was 2.87 and the average family size was 3.30.

The median income for a household in the county was $64,962, and the median income for a family was $72,510. Males had a median income of $47,236 versus $28,621 for females. The per capita income for the county was $33,767. Only 42.9% are natives of Utah. 5.40% of the population and 3.00% of families were below the poverty line.

According to a 2000 survey by the Association of Statisticians of American Religious Bodies, Summit County is much more diverse in religious belief than Utah as a whole. Fully two in five people (44.2%) of the population claim no religion at all while among those that do, The Church of Jesus Christ of Latter-day Saints (LDS Church) make up the largest group at 36.8% (compared with some 66% statewide), followed by Roman Catholics at 10.6%.




Census-designated places

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