Data / Population / Fergus County

Population in Fergus County

Population in Fergus County was 11,825 in 2025, according to the U.S. Census Bureau. That is unchanged from 2024. That is the 18th highest of 56 counties in 2025.

2025, persons11,825
Change on 2024-0%
Rank18th of 56Counties in Montana ranked
Series high11,8262024
Series low11,4732020

Population in Fergus County, 2020 to 2025

CSVChart (SVG)

11.4K11.5K11.6K11.7K11.8K11.9K2020202120222023202420252020: 11,473 persons2021: 11,618 persons2022: 11,662 persons2023: 11,813 persons2024: 11,826 persons2025: 11,825 persons
persons. Source: U.S. Census Bureau. Retrieved 2026-10-08, published 2026-03-26.
All 6 values
Periodpersons
202511,825
202411,826
202311,813
202211,662
202111,618
202011,473

Compared with Montana and United States

Place2025
Fergus County11,825
Montana1,144,694
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 Fergus County?

Population in Fergus County was 11,825 in 2025, according to the U.S. Census Bureau. That is unchanged from 2024. That is the 18th highest of 56 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 Fergus County?

11,826 in 2024, the highest value since 2020 in this series.

More statistics for Fergus County

All statistics for Fergus County