Blaine County, Idaho Demographics 2026

Population Overview

Blaine County is located in Idaho with a total population of 24,579. It is the 17th most populous county out of 44 in Idaho.

Age Demographics

The median age in Blaine County is 45.5 years. This is 23% higher than the state median of 37.1 years.

Economy, Income & Housing

The median household income in Blaine County is $84,470. This is 13% higher than the state median of $74,636. Compared to the national median of $78,538, household income here is 8% higher. The poverty rate stands at 7.4%. This is 30% lower than the state poverty rate of 10.6%. The unemployment rate is 2.6%. This is 29% lower than the state rate of 3.7%. The median home value is $663,800. Housing costs are 77% higher than the state median of $376,000. The home-value-to-income ratio of 7.9x suggests that housing affordability is a significant concern for many residents. 75.5% of occupied housing units are owner-occupied. This homeownership rate is 4% higher than the state average of 72.4%.

Race & Ethnicity

The largest racial or ethnic group in Blaine County is White (non-Hispanic), making up 72.7% of the population. Hispanic or Latino residents account for 21.2%. The Hispanic or Latino population is significantly higher than the state average (21.2% vs 13.3%). The Asian population (0.5%) is well below the state average of 1.3%.

Education

45.5% of residents aged 25 and older hold a bachelor's degree or higher. This places Blaine County in the top 10% of all cities in the state for educational attainment. This is 46% higher than the state rate of 31.2%. Nationally, 35.0% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 91.2%.