Fort Belknap Agency, Montana Demographics & Population 2026

Population Overview

Fort Belknap Agency is a small community located in Montana, within Blaine County. The total population is 1,227. It ranks as the 81st most populous out of 475 Census-designated places in Montana.

Age Demographics

The median age in Fort Belknap Agency is 28.1 years. This is 30% lower than the state median of 40.4 years. With 33.4% of the population under 18, Fort Belknap Agency has a notably young demographic profile, suggesting a family-oriented community.

Economy, Income & Housing

The median household income in Fort Belknap Agency is $46,071. This is 36% lower than the state median of $72,509. It is also 43% lower than the national median of $80,734. The poverty rate stands at 29.4%. This is 155% higher than the state poverty rate of 11.5%. With more than one in five residents living below the poverty line, economic hardship is a significant challenge for the community. The unemployment rate is 38.8%. This is 973% higher than the state rate of 3.6%. The median home value is $72,700. Housing costs are 81% lower than the state median of $375,800. With a home-value-to-income ratio of just 1.6x, Fort Belknap Agency is one of the most affordable housing markets in the area. 53.1% of occupied housing units are owner-occupied. This homeownership rate is 23% lower than the state average of 69.2%.

Race & Ethnicity

Fort Belknap Agency is a highly diverse community where no single racial or ethnic group constitutes a majority of the population. Hispanic or Latino residents account for 1.4%. The White (non-Hispanic) population (1.8%) is well below the state average of 83.6%. The Hispanic or Latino population (1.4%) is well below the state average of 4.6%.

Education

8.9% of residents aged 25 and older hold a bachelor's degree or higher. This is 75% lower than the state rate of 35.2%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 87.4%.

Data Sources & Methodology

All demographic data for Fort Belknap Agency, Montana is sourced from the U.S. Census Bureau's American Community Survey (ACS) 2020–2024 5-Year Estimates. The ACS collects data from approximately 3.5 million households annually and pools five years of responses so that even small communities can be measured, though the margin of error widens as the population falls. Comparisons are made against Montana state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 475 Census-designated places in Montana. Read more about how these figures are produced on our methodology page, or visit data.census.gov for official data.