In 2020, Jefferson County, ID had a population of 29.2k people with a median age of 31.9 and a median household income of $65,577. Between 2019 and 2020 the population of Jefferson County, ID grew from 28,534 to 29,238, a 2.47% increase and its median household income grew from $63,048 to $65,577, a 4.01% increase.
The 5 largest ethnic groups in Jefferson County, ID are White (Non-Hispanic) (86.6%), Other (Hispanic) (5.22%), White (Hispanic) (3.5%), Two+ (Hispanic) (1.77%), and American Indian & Alaska Native (Non-Hispanic) (1.17%).
None of the households in Jefferson County, ID reported speaking a non-English language at home as their primary shared language. This does not consider the potential multi-lingual nature of households, but only the primary self-reported language spoken by all members of the household.
97.4% of the residents in Jefferson County, ID are U.S. citizens.
In 2020, the median property value in Jefferson County, ID was $223,900, and the homeownership rate was 81.2%. Most people in Jefferson County, ID drove alone to work, and the average commute time was 22.7 minutes. The average car ownership in Jefferson County, ID was 3 cars per household.