Fremont County, Wyoming

Fremont County population, land area and income

Fremont County had 39,721 residents in the Census Vintage 2024 estimate, on 9,183.6 square miles of land. It ranks 5th of 23 in Wyoming by population and 2nd by land area. That works out to 4.3 people per square mile, below the US average of 96.3, and in the bottom quarter nationally.

The median county-equivalent in Wyoming has 14,250 residents, so Fremont County is 2.8 times that size.

Its SAIPE 2023 median household income of $64,170 is above the national county median among 3,143 counties with an estimate.

How Fremont County's population changed since 2020

Fremont County gained 531 residents between the July 2020 and July 2024 estimates, a rise of 1.4%. That ranks 10th of 23 in Wyoming for growth. The median Wyoming county changed by +0.9%, and the state as a whole by +1.7%.

Since the April 2020 estimates base, Fremont County recorded 1,879 births and 2,320 deaths, a natural change of -441. Net international migration added -11 and net domestic migration, people moving to or from other US counties, came to +925. The largest single component was domestic migration, which added 925 people.

Where Fremont County is

The Census internal point of Fremont County is at 43.054800, -108.608900. It sits in UTM zone 12N. The map shades Wyoming's 23 county-equivalents by population change from 2020 to 2024, darker for faster growth, with Fremont County outlined. Dots are towns of 1,000+ people with residents in it.

Towns in Fremont County

2 incorporated places of 1,000+ people have residents in Fremont County, 18,404 people together, or 46% of the county. Each figure counts only the part of the town inside Fremont County; towns marked "part" extend into another county. The largest is Riverton with 10,953.

Counties bordering Fremont County

The Census 2024 county adjacency file lists 8 neighbors for Fremont County. The most populous is Natrona County, WY, with 80,410 residents. Distances run between Census internal points in a straight line.

• Natrona County

  80,410 people

  93 mi E

• Sweetwater County

  41,273 people

  97 mi S

• Park County

  31,082 people

  111 mi NNW

• Teton County

  23,272 people

  114 mi NW

• Carbon County

  14,250 people

  127 mi SE

• Sublette County

  8,965 people

  69 mi WSW

• Washakie County

  7,662 people

  74 mi NE

• Hot Springs County

  4,625 people

  47 mi N

Distance to Cheyenne and the nearest big city

Cheyenne is 235.0 miles ESE of Fremont County's internal point in a straight line. The nearest place of 100,000 or more is Billings, MT (population 121,483), 188.9 miles away. The nearest place of 10,000 or more is Riverton, WY (population 10,953), 11.7 miles away.

Fremont County FIPS code

The FIPS code of Fremont County is 56013: state code 56 for Wyoming plus county code 013. Use it as text, with the leading zero, when joining Census, BLS, or CDC county tables. SAIPE lists its 2023 median household income as $64,170.