Twin Falls County, Idaho Demographics 2026

Population Overview

Twin Falls County is located in Idaho with a total population of 92,121. It is the 5th most populous county out of 44 in Idaho.

Age Demographics

The median age in Twin Falls County is 35.8 years. This is 4% lower than the state median of 37.1 years.

Economy, Income & Housing

The median household income in Twin Falls County is $65,338. This is 12% lower than the state median of $74,636. Compared to the national median of $78,538, household income here is 17% lower. The poverty rate stands at 10.7%. This is about average than the state poverty rate of 10.6%. The unemployment rate is 3.2%. This is 14% lower than the state rate of 3.7%. The median home value is $292,700. Housing costs are 22% lower than the state median of $376,000. The home-value-to-income ratio is 4.5x. 69.6% of occupied housing units are owner-occupied. This homeownership rate is 4% lower than the state average of 72.4%.

Race & Ethnicity

The largest racial or ethnic group in Twin Falls County is White (non-Hispanic), making up 76.2% of the population. Hispanic or Latino residents account for 17.5%.

Education

23.0% of residents aged 25 and older hold a bachelor's degree or higher. This is 26% lower 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 88.6%.