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Fremont County, Wyoming facts for kids

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Fremont County
Fremont County
Fremont County Courthouse in Lander
Fremont County Courthouse in Lander
Map of Wyoming highlighting Fremont County
Location within the U.S. state of Wyoming
Map of the United States highlighting Wyoming
Wyoming's location within the U.S.
Country  United States
State  Wyoming
Founded March 5, 1884
Named for John C. Frémont
Seat Lander
Largest city Riverton
 • Total 9,266 sq mi (24,000 km2)
 • Land 9,184 sq mi (23,790 km2)
 • Water 82 sq mi (210 km2)  0.9%%
 • Total 39,234
 • Estimate 
 • Density 4.23419/sq mi (1.63483/km2)
Time zone UTC−7 (Mountain)
 • Summer (DST) UTC−6 (MDT)
Congressional district At-large
John Charles Frémont
John C. Frémont

Fremont County is a county in the U.S. state of Wyoming. As of the 2020 United States Census, the population was 39,234, making it the fifth-most populous county in Wyoming. Its county seat is Lander. The county was founded in 1884 and is named for John C. Frémont, a general, explorer, and politician. It is roughly the size of the state of Vermont.

Fremont County comprises the Riverton, WY Micropolitan Statistical Area.


Fremont County was created on March 5, 1884 by the legislature of the Wyoming Territory The county was created with land ceded by Sweetwater County. In 1890, Big Horn County was carved out of Fremont, Johnson, and Sheridan Counties. Hot Springs County was created in 1911 from parts of Fremont County, along with a portion of Big Horn County and Park County. In 1921, Sublette County was created from part of Fremont County and Lincoln County. The boundaries of Fremont County have remained unchanged since 1921.

Fremont County was named for John Charles Frémont, an explorer of the American West, Senator from California, and 1856 Republican presidential candidate. Fremont County is the historical home of the Wind River Indian Reservation, home of the Eastern Shoshone and Northern Arapaho tribes of Native Americans.

Since 1998, Fremont County has been represented in the Wyoming State Senate by the economist/businessman Cale Case, a Republican.


According to the U.S. Census Bureau, the county has a total area of 9,266 square miles (24,000 km2), of which 9,184 square miles (23,790 km2) is land and 82 square miles (210 km2) (0.9%) is water. It is the second-largest county by area in Wyoming, as well as in the six Rocky Mountain States. Elevations and climate range from desert at Boysen State Park to glaciers at 13,804-foot (4,207 m) Gannett Peak, the highest point not only in Wyoming but in the three Central Rockies states of Wyoming, Idaho and Montana. The southern end of the county is traversed by the Oregon Trail and in the northwest corner lies Dubois, a gateway town for Yellowstone National Park and Grand Teton National Park. Although the county seat is Lander, the largest community is Riverton, home of Central Wyoming College and the economic hub of the region. A large portion of the western edge of the county follows the Continental Divide at the crest of the Wind River Range of the Rocky Mountains, known for its vast wilderness areas and home of the largest glaciers in the American Rocky Mountains.

Adjacent counties

National protected areas

Although the Bridger National Forest and the Teton National Forest have been administratively combined into the Bridger-Teton National Forest, it is important to note that the county contains portions of both original forests.


Historical population
Census Pop.
1890 2,463
1900 5,357 117.5%
1910 11,822 120.7%
1920 11,820 0.0%
1930 10,490 −11.3%
1940 16,095 53.4%
1950 19,580 21.7%
1960 26,168 33.6%
1970 28,352 8.3%
1980 38,992 37.5%
1990 33,662 −13.7%
2000 35,804 6.4%
2010 40,123 12.1%
2020 39,234 −2.2%
US Decennial Census
1870–2000 2010–2020

2010 census

As of the 2010 United States Census, there were 40,123 people, 15,455 households, and 10,360 families residing in the county. The population density was 4.4 inhabitants per square mile (1.7/km2). There were 17,796 housing units at an average density of 1.9 per square mile (0.73/km2). The racial makeup of the county was 74.3% white, 21.2% American Indian, 0.4% Asian, 0.3% black or African American, 1.0% from other races, and 2.8% from two or more races. Those of Hispanic or Latino origin made up 5.6% of the population. In terms of ancestry, 21.7% were German, 13.5% were English, 12.2% were Irish, and 7.7% were American.

Of the 15,455 households, 32.3% had children under the age of 18 living with them, 49.3% were married couples living together, 12.2% had a female householder with no husband present, 33.0% were non-families, and 27.0% of all households were made up of individuals. The average household size was 2.54 and the average family size was 3.07. The median age was 38.5 years.

The median income for a household in the county was $46,397 and the median income for a family was $55,531. Males had a median income of $44,087 versus $27,751 for females. The per capita income for the county was $24,173. About 10.3% of families and 14.0% of the population were below the poverty line, including 20.7% of those under age 18 and 6.4% of those age 65 or over.




Census-designated places

Unincorporated communities

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