Stillwater County, Montana Demographics 2026

Population Overview

Stillwater County is located in Montana with a total population of 9,052. It is the 24th most populous county out of 56 in Montana.

Age Demographics

The median age in Stillwater County is 47.4 years. This is 18% higher than the state median of 40.2 years.

Economy, Income & Housing

The median household income in Stillwater County is $81,503. This is 17% higher than the state median of $69,922. Compared to the national median of $78,538, household income here is 4% higher. The poverty rate stands at 8.3%. This is 32% lower than the state poverty rate of 12.0%. The unemployment rate is 3.3%. This is 11% lower than the state rate of 3.8%. The median home value is $355,600. Housing costs are 5% higher than the state median of $338,100. The home-value-to-income ratio is 4.4x. 80.8% of occupied housing units are owner-occupied. This homeownership rate is 16% higher than the state average of 69.4%.

Race & Ethnicity

Stillwater County has a predominantly White (non-Hispanic) population, comprising 92.3% of all residents. Hispanic or Latino residents account for 3.4%. The Black or African American population (0.1%) is well below the state average of 0.5%. The Asian population (0.4%) is well below the state average of 0.8%.

Education

29.8% of residents aged 25 and older hold a bachelor's degree or higher. This is 14% lower than the state rate of 34.5%. Nationally, 35.0% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 93.1%.