Franklin County, Idaho Demographics 2026

Population Overview

Franklin County is located in Idaho with a total population of 14,715. It is the 22nd most populous county out of 44 in Idaho.

Age Demographics

The median age in Franklin County is 32.5 years. This is 12% lower than the state median of 37.1 years. With 30.9% of the population under 18, Franklin County has a notably young demographic profile, suggesting a family-oriented community.

Economy, Income & Housing

The median household income in Franklin County is $65,991. This is 12% lower than the state median of $74,636. Compared to the national median of $78,538, household income here is 16% lower. The poverty rate stands at 8.4%. This is 21% lower than the state poverty rate of 10.6%. The unemployment rate is 1.8%. This is 51% lower than the state rate of 3.7%. The median home value is $304,000. Housing costs are 19% lower than the state median of $376,000. The home-value-to-income ratio is 4.6x. 75.2% of occupied housing units are owner-occupied. This homeownership rate is 4% higher than the state average of 72.4%.

Race & Ethnicity

Franklin County has a predominantly White (non-Hispanic) population, comprising 89.8% of all residents. Hispanic or Latino residents account for 7.3%. The Asian population (0.0%) is well below the state average of 1.3%.

Education

21.5% of residents aged 25 and older hold a bachelor's degree or higher. This is 31% 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 94.0%.