Granite County, Montana Demographics 2026

Population Overview

Granite County is located in Montana with a total population of 3,419. It is the 41st most populous county out of 56 in Montana.

Age Demographics

The median age in Granite County is 53.9 years. This is 34% higher than the state median of 40.2 years. 12.6% of residents are 75 or older, suggesting a significant retirement-age population with implications for healthcare services and senior housing.

Economy, Income & Housing

The median household income in Granite County is $54,646. This is 22% lower than the state median of $69,922. Compared to the national median of $78,538, household income here is 30% lower. The poverty rate stands at 10.4%. This is 13% lower than the state poverty rate of 12.0%. The unemployment rate is 6.5%. This is 72% higher than the state rate of 3.8%. The median home value is $339,500. Housing costs are about average than the state median of $338,100. The home-value-to-income ratio of 6.2x suggests that housing affordability is a significant concern for many residents. 76.4% of occupied housing units are owner-occupied. This homeownership rate is 10% higher than the state average of 69.4%.

Race & Ethnicity

Granite County has a predominantly White (non-Hispanic) population, comprising 92.5% of all residents. Hispanic or Latino residents account for 1.9%. The Black or African American population is significantly higher than the state average (0.7% vs 0.5%). The Hispanic or Latino population (1.9%) is well below the state average of 4.4%.

Education

31.2% of residents aged 25 and older hold a bachelor's degree or higher. This is 10% 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 93.0%.