Kootenai County, Idaho Demographics 2026

Population Overview

Kootenai County is located in Idaho with a total population of 177,736. It is the 3rd most populous county out of 44 in Idaho.

Age Demographics

The median age in Kootenai County is 40.8 years. This is 10% higher than the state median of 37.1 years.

Economy, Income & Housing

The median household income in Kootenai County is $77,034. This is 3% higher than the state median of $74,636. Compared to the national median of $78,538, household income here is 2% lower. The poverty rate stands at 9.3%. This is 13% lower than the state poverty rate of 10.6%. The unemployment rate is 3.3%. This is 11% lower than the state rate of 3.7%. The median home value is $467,400. Housing costs are 24% higher than the state median of $376,000. The home-value-to-income ratio of 6.1x suggests that housing affordability is a significant concern for many residents. 72.2% of occupied housing units are owner-occupied.

Race & Ethnicity

Kootenai County has a predominantly White (non-Hispanic) population, comprising 86.3% of all residents. Hispanic or Latino residents account for 5.4%. The Black or African American population (0.3%) is well below the state average of 0.7%. The Hispanic or Latino population (5.4%) is well below the state average of 13.3%.

Education

28.8% of residents aged 25 and older hold a bachelor's degree or higher. This is 8% 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 94.4%.