Reserve, Montana Demographics & Population 2026

A note before these figures: with a population of 19, Reserve'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

Reserve is a small community located in Montana, within Sheridan County. The total population is 19. It ranks as the 443rd most populous out of 475 Census-designated places in Montana.

Age Demographics

The median age in Reserve is 59.8 years. This is 48% higher than the state median of 40.4 years.

Economy, Income & Housing

The median household income in Reserve is $53,750. This is 26% lower than the state median of $72,509. It is also 33% lower than the national median of $80,734. The poverty rate stands at 31.6%. This is 174% 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 survey records no unemployed residents in Reserve, which reflects the size of the sample rather than a labor market without joblessness. The median home value is $100,000. Housing costs are 73% lower than the state median of $375,800. With a home-value-to-income ratio of just 1.9x, Reserve is one of the most affordable housing markets in the area. 100.0% of occupied housing units are owner-occupied. This homeownership rate is 45% higher than the state average of 69.2%.

Race & Ethnicity

Reserve has a predominantly White (non-Hispanic) population, comprising 89.5% of all residents.

Education

33.3% of residents aged 25 and older hold a bachelor's degree or higher. This is 5% lower 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 Reserve, 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.