Counties in Montana by GDP per capita (US dollars)
Liberty County had the highest GDP per capita (US dollars) of 56 counties in 2021, at $127,885. Petroleum County had the lowest, at $19,133. The median was $45,784 and the figure for Montana was $54,229. Source: BEA.
Gross domestic product at current prices in US dollars divided by the resident population.
United States, states and counties: Invokely calculation, BEA current-dollar GDP divided by the BEA mid-year population of the same year and place; both inputs are shown with each value. GDP is counted where production happens and population where people live, so places with many commuters or capital-intensive industries, such as the District of Columbia or oil counties, show very high values. Not the same as per_capita_personal_income. For Spain and the EU use gdp_per_capita (EUR) or gdp_per_capita_pps. Other countries and the World: World Bank, converted at official annual average exchange rates (market rates, not purchasing power parity, so it understates living standards in lower-price countries). For euros use gdp_per_capita.
Every value in the ranking comes from the same publisher and the same period, so the counties are compared on one definition. Equal values share a rank.
How to cite
Invokely calculation from GDP in current dollars (BEA SAGDP2 and CAGDP1) divided by mid-year population (BEA SAINC1 and CAINC1). https://invokely.ai/docs/methodology#gdp_per_capita_usd. Retrieved 2026-10-09.
Use this data in your AI agent
Invokely serves this figure to AI assistants through MCP and to code through a REST API, with the source and citation attached. Ask your assistant:
Rank Counties in Montana by GDP per capita (US dollars) using official data, and cite the source.
rank_places {"indicator":"gdp_per_capita_usd","level":"province","within":"Montana","limit":10}
GET https://invokely.ai/api/v1/rank?indicator=gdp_per_capita_usd&level=province&within=Montana&limit=10
Which county has the highest GDP per capita (US dollars)?
Liberty County, with $127,885 in 2021, according to BEA.
Which county has the lowest GDP per capita (US dollars)?
Petroleum County, with $19,133 in 2021.
Where does this ranking come from?
Every value comes from one source and one period, so the places are comparable: Invokely, GDP in current dollars (BEA SAGDP2 and CAGDP1) divided by mid-year population (BEA SAINC1 and CAINC1). Retrieved 2026-10-09.
