Custer County, MT — Demographics & Population
Population, age distribution, race & ethnicity, and education data
Population Overview
Source: Census Bureau ACS (2023)Total Population
11,938
Male
6,034
50.5%
Female
5,904
49.5%
Median Age
42.6 yrs
Avg Household Size
2.3
Foreign Born
1.6%
Race & Ethnicity
Source: Census Bureau ACS (2023)Age Distribution
Source: Census Bureau ACS (2023)Education
Source: Census Bureau ACS (2023)Bachelor's or Higher21.5%
High School or Higher43.0%
Other Demographics
Source: Census Bureau ACS (2023)Veterans
7.3%
Disability
0.0%
Non-English Home
3.8%
Married
44.8%
Custer County, MT has a population of 11,938 according to 2023 Census Bureau estimates. The median age is 42.6 years. The largest racial or ethnic group is White at 91.2% of the population. 21.5% of residents hold a bachelor's degree or higher. 1.6% of residents are foreign-born.