How Jefferson County Compares

Jefferson County

32.8 years

Idaho Average

32.8 years

Rank #41 of 44 in state

National

38.9 years

15.7% below

National Distribution

Where Jefferson County falls among all 3,222 U.S. counties for median age.

21.4 years 86.2 years

■ Jefferson County: 32.8 years

Ranking Context

Rank	County	Value
#3,082	Liberty County, TX	32.9 years
#3,083	Tuscaloosa County, AL	32.8 years
#3,084	Coconino County, AZ	32.8 years
#3,085	Jefferson County, ID	32.8 years
#3,086	Cass County, ND	32.8 years
#3,087	Custer County, OK	32.8 years
#3,088	Coryell County, TX	32.8 years

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Median Age in Jefferson County, Idaho

Jefferson County, Idaho has a median age of 32.8 years, which ranks #3,085 of 3,222 out of 3,222 counties nationwide. This is 15.7% below the national value of 38.9 years.

Within Idaho, Jefferson County ranks #41 of 44 out of 44 counties. This places it in the 4th percentile nationally.

The median age of the total population. All data comes from the U.S. Census Bureau's American Community Survey (ACS) 5-Year Estimates for 2024.

About this data

Source: U.S. Census Bureau, American Community Survey 5-Year Estimates (2024). All values are estimates derived from survey samples and are subject to margin of error. For more information, see our methodology.