Data / Population / Richland County

Population in Richland County

Population in Richland County was 11,377 in 2025, according to the U.S. Census Bureau. That is up 2.8% from 2024. That is the 20th highest of 56 counties in 2025.

2025, persons11,377
Change on 2024+2.8%
Rank20th of 56Counties in Montana ranked
Series high11,5272020
Series low11,0712024

Population in Richland County, 2020 to 2025

CSVChart (SVG)

11K11.1K11.2K11.3K11.4K11.5K11.6K2020202120222023202420252020: 11,527 persons2021: 11,324 persons2022: 11,174 persons2023: 11,103 persons2024: 11,071 persons2025: 11,377 persons
persons. Source: U.S. Census Bureau. Retrieved 2026-10-08, published 2026-03-26.
All 6 values
Periodpersons
202511,377
202411,071
202311,103
202211,174
202111,324
202011,527

Compared with Montana and United States

Place2025
Richland County11,377
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 Richland County?

Population in Richland County was 11,377 in 2025, according to the U.S. Census Bureau. That is up 2.8% from 2024. That is the 20th 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 Richland County?

11,527 in 2020, the highest value since 2020 in this series.

More statistics for Richland County

All statistics for Richland County