How many people live in Carbon County, MT?
Updated Apr. 6, 2026Refreshed annually
In 2024, there were about 11,500 people living in Carbon County, MT. That makes Carbon County the 19th-most populous county in Montana. It is home to 1% of people living in the state.
11.5K
population of Carbon County, MT (2024)
1%
County share of the Montana population (2024)
About 11,500 people lived in Carbon County, MT in 2024.
Population estimates, 2000–2024
What are Carbon County, MT’s age demographics?
About 3,400 Carbon County, MT residents are aged 65 and older in 2024. That represents 29.8% of its population. For comparison, the age group represents 21.1% of Montana’s population and 18% in the US overall.
Another 2,000 Carbon County residents, or 17% 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 Carbon County, MT's population is aged 65 or older than the US as a whole.
Population estimates by age group, (2024)
What are Carbon County, MT’s racial and ethnic demographics?
Non-Hispanic white residents make up 92% of the Carbon County, MT population, higher than the national share of 57.5%. Carbon County, MT also has a larger share of people identifying as non-Hispanic American Indian and Alaska Native (1.3%) than the US overall (0.72%).
In contrast, Carbon County’s Hispanic population accounts for 3.3%, below the 20% nationwide, and the non-Hispanic Black or African American population makes up 0.83% 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.
Carbon County, MT has a higher share of a non-Hispanic white population than Montana as a whole.
Population estimates by race and ethnicity, (2024)
The largest city or town in Carbon County, MT is Red Lodge with about 2,700 residents in 2024.
Cities and towns in Carbon County, MT ranked by population
Population (2024), includes only portions within county
| City or town | Population | |
|---|---|---|
| 1. | Red Lodge | 2,686 |
| 2. | Bridger | 716 |
| 3. | Joliet | 620 |
| 4. | Fromberg | 423 |
| 5. | Bearcreek | 101 |
| 6. | Balance of Carbon County | 6,952 |
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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.
