Fort Peck, Montana Demographics & Population 2026

A note before these figures: with a population of 280, Fort Peck's ACS estimates come from a small number of survey responses and carry wide margins of error. Individual percentages below — particularly rates that round to 0% or 100% — are approximations, not precise measurements. See data.census.gov for the published margins of error.

Population Overview

Fort Peck is a small community located in Montana, within Valley County. The total population is 280. It ranks as the 209th most populous out of 475 Census-designated places in Montana.

Age Demographics

The median age in Fort Peck is 48.8 years. This is 21% higher than the state median of 40.4 years.

Economy, Income & Housing

The median household income in Fort Peck is $90,833. This is 25% higher than the state median of $72,509. It is also 13% higher than the national median of $80,734. The ACS records no residents below the poverty line in Fort Peck. In a community this small the estimate rests on very few survey responses, so it should be read as an absence of measurement rather than a measured absence of poverty. The survey records no unemployed residents in Fort Peck, which reflects the size of the sample rather than a labor market without joblessness. The median home value is $273,900. Housing costs are 27% lower than the state median of $375,800. The home-value-to-income ratio is 3.0x. 98.2% of occupied housing units are owner-occupied. This homeownership rate is 42% higher than the state average of 69.2%.

Race & Ethnicity

Fort Peck has a predominantly White (non-Hispanic) population, comprising 88.9% of all residents.

Education

45.3% of residents aged 25 and older hold a bachelor's degree or higher. This is 29% higher than the state rate of 35.2%. Nationally, 35.7% of adults hold at least a bachelor's degree. No surveyed resident aged 25 or older reported leaving school before earning a high school diploma, though a rate of exactly 100% reflects the limits of a small sample.

Data Sources & Methodology

All demographic data for Fort Peck, 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.