How many people live in Chouteau County, MT?
Updated Apr. 6, 2026Refreshed annually
In 2024, there were about 5,900 people living in Chouteau County, MT. That makes Chouteau County the 34th-most populous county in Montana. It is home to 0.51% of people living in the state.
5.88K
population of Chouteau County, MT (2024)
0.51%
County share of the Montana population (2024)
About 5,900 people lived in Chouteau County, MT in 2024.
Population estimates, 2000–2024
What are Chouteau County, MT’s age demographics?
About 1,500 Chouteau County residents are aged 65 and older in 2024. That represents 25.1% of its population. For comparison, the age group represents 21.1% of Montana’s population and 18% in the US overall.
Another 1,200 Chouteau County residents, or 19.8% of the population, were children under 18. For comparison, the age group represents 20.5% of Montana’s population and 21.6% in the US overall.
A higher share of Chouteau County, MT's population is aged 65 or older than the US as a whole.
Population estimates by age group, (2024)
What are Chouteau County, MT’s racial and ethnic demographics?
Non-Hispanic white residents make up 76.8% of the Chouteau County, MT population, higher than the national share of 57.5%. Chouteau County also has a larger share of people identifying as non-Hispanic American Indian and Alaska Native (16.9%) than the US overall (0.72%).
In contrast, Chouteau County’s Hispanic population accounts for 3.2%, below the 20% nationwide, and the non-Hispanic Black or African American population makes up 0.22% of the county, compared with 12.6% nationally.
Racial and ethnic make up differ based on location. These figures reflect how people identified their race alone (not in combination with other races), and separate out Hispanic or Latino ethnicity, following Census reporting standards.
Chouteau County, MT has a higher share of a non-Hispanic American Indian and Alaska Native population than Montana as a whole.
Population estimates by race and ethnicity, (2024)
The largest city or town in Chouteau County, MT is Fort Benton with about 1,400 residents in 2024.
Cities and towns in Chouteau County, MT ranked by population
Population (2024), includes only portions within county
| City or town | Population | |
|---|---|---|
| 1. | Fort Benton | 1,422 |
| 2. | Big Sandy | 604 |
| 3. | Geraldine | 206 |
| 4. | Balance of Chouteau County | 3,648 |
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Methodology
USAFacts standardizes data, in areas such as time and demographics, to make it easier to understand and compare.
The analysis was generated with the help of AI and reviewed by USAFacts for accuracy.
Page sources
USAFacts endeavors to share the most up-to-date information available. We sourced the data on this page directly from government agencies; however, the intervals at which agencies publish updated data vary.
