Bannock County, Idaho Demographics 2026

Population Overview

Bannock County is located in Idaho with a total population of 88,457. It is the 6th most populous county out of 44 in Idaho.

Age Demographics

The median age in Bannock County is 35.0 years. This is 6% lower than the state median of 37.1 years.

Economy, Income & Housing

The median household income in Bannock County is $64,080. This is 14% lower than the state median of $74,636. Compared to the national median of $78,538, household income here is 18% lower. The poverty rate stands at 12.2%. This is 14% higher than the state poverty rate of 10.6%. The unemployment rate is 4.6%. This is 26% higher than the state rate of 3.7%. The median home value is $267,200. Housing costs are 29% lower than the state median of $376,000. The home-value-to-income ratio is 4.2x. 68.6% of occupied housing units are owner-occupied. This homeownership rate is 5% lower than the state average of 72.4%.

Race & Ethnicity

The largest racial or ethnic group in Bannock County is White (non-Hispanic), making up 81.1% of the population. Hispanic or Latino residents account for 9.6%.

Education

30.2% of residents aged 25 and older hold a bachelor's degree or higher. This is 3% 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 93.8%.