Petroleum County, MT — Demographics & Population
Population, age distribution, race & ethnicity, and education data
Population Overview
Source: Census Bureau ACS (2023)Total Population
401
Male
227
56.6%
Female
174
43.4%
Median Age
51.5 yrs
Avg Household Size
2.0
Foreign Born
1.0%
Race & Ethnicity
Source: Census Bureau ACS (2023)Age Distribution
Source: Census Bureau ACS (2023)Education
Source: Census Bureau ACS (2023)Bachelor's or Higher22.2%
High School or Higher58.6%
Other Demographics
Source: Census Bureau ACS (2023)Veterans
15.5%
Disability
0.0%
Non-English Home
1.0%
Married
62.6%
Petroleum County, MT has a population of 401 according to 2023 Census Bureau estimates. The median age is 51.5 years. The largest racial or ethnic group is White at 99.3% of the population. 22.2% of residents hold a bachelor's degree or higher. 1.0% of residents are foreign-born.