Data / Population / Fremont County

Population in Fremont County

Population in Fremont County was 39,464 in 2025, according to the U.S. Census Bureau. That is down 0.5% from 2024. That is the 5th highest of 23 counties in 2025.

2025, persons39,464
Change on 2024-0.5%
Rank5th of 23Counties in Wyoming ranked
Series high39,7542023
Series low39,1922020

Population in Fremont County, 2020 to 2025

CSVChart (SVG)

39K39.2K39.4K39.6K39.8K2020202120222023202420252020: 39,192 persons2021: 39,401 persons2022: 39,519 persons2023: 39,754 persons2024: 39,664 persons2025: 39,464 persons
persons. Source: U.S. Census Bureau. Retrieved 2026-10-08, published 2026-03-26.
All 6 values
Periodpersons
202539,464
202439,664
202339,754
202239,519
202139,401
202039,192

Compared with Wyoming and United States

Place2025
Fremont County39,464
Wyoming588,753
United States341,784,857

Rankings

Definition

Resident population. Spain and the EU: 1 January, with Spanish figures from the official municipal register (Padrón). United States: Census Bureau population estimates for 1 July. Other countries and the World: World Bank mid-year estimates, which count all residents regardless of legal status or citizenship.

For Denmark, Statistics Denmark counts the registered resident population on 1 January. Greenland and the Faroe Islands are excluded. The annual series selects the first-quarter reference date from FOLK1A. The World Bank series exists for every country, so use it (through compare) to rank countries on one basis.

How to cite

U.S. Census Bureau. Annual estimates of the resident population for the United States, states and counties, 1 July (Population Estimates Program). https://www2.census.gov/programs-surveys/popest/datasets/2020-2025/. Retrieved 2026-10-08.

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Questions

What is the population in Fremont County?

Population in Fremont County was 39,464 in 2025, according to the U.S. Census Bureau. That is down 0.5% from 2024. That is the 5th highest of 23 counties in 2025.

Where does this figure come from?

U.S. Census Bureau. Annual estimates of the resident population for the United States, states and counties, 1 July (Population Estimates Program). Retrieved by Invokely on 2026-10-08.

What was the highest population in Fremont County?

39,754 in 2023, the highest value since 2020 in this series.

More statistics for Fremont County

All statistics for Fremont County