Yellowstone County, MT — Demographics & Population
Population, age distribution, race & ethnicity, and education data
Population Overview
Source: Census Bureau ACS (2023)Total Population
167,340
Male
82,873
49.5%
Female
84,467
50.5%
Median Age
38.7 yrs
Avg Household Size
2.4
Foreign Born
1.8%
Race & Ethnicity
Source: Census Bureau ACS (2023)Age Distribution
Source: Census Bureau ACS (2023)Education
Source: Census Bureau ACS (2023)Bachelor's or Higher23.4%
High School or Higher43.8%
Other Demographics
Source: Census Bureau ACS (2023)Veterans
7.2%
Disability
0.0%
Non-English Home
3.3%
Married
41.6%
Yellowstone County, MT has a population of 167,340 according to 2023 Census Bureau estimates. The median age is 38.7 years. The largest racial or ethnic group is White at 86.8% of the population. 23.4% of residents hold a bachelor's degree or higher. 1.8% of residents are foreign-born.