Jefferson County, Idaho
Population estimates, July 1, 2025, (V2025) 35,297
People
Population
Population estimates, July 1, 2025, (V2025) 35,297
Population estimates, July 1, 2024, (V2024) 34,854
Population estimates base, April 1, 2020, (V2025) 30,891
Population estimates base, April 1, 2020, (V2024) 30,891
Population, percent change - April 1, 2020 (estimates base) to July 1, 2025, (V2025) 14.3%
Population, percent change - April 1, 2020 (estimates base) to July 1, 2024, (V2024) 12.8%
Population, Census, April 1, 2020 30,891
Population, Census, April 1, 2010 26,140
Age and Sex
Persons under 5 years, percent 6.8%
Persons under 18 years, percent 31.2%
Persons 65 years and over, percent 12.9%
Female persons, percent 48.5%
Race and Hispanic Origin
White alone, percent 95.4%
Black alone, percent(a) 0.4%
American Indian and Alaska Native alone, percent(a) 1.2%
Asian alone, percent(a) 0.5%
Native Hawaiian and Other Pacific Islander alone, percent(a) 0.2%
Two or More Races, percent 2.2%
Hispanic or Latino, percent(b) 11.4%
White alone, not Hispanic or Latino, percent 85.7%
Population Characteristics
Veterans, 2020-2024 1,177
Foreign-born persons, percent, 2020-2024 4.2%
Housing
Housing Units, July 1, 2025, (V2025) 11,524
Owner-occupied housing unit rate, 2020-2024 83.0%
Median value of owner-occupied housing units, 2020-2024 $408,400
Median selected monthly owner costs - with a mortgage, 2020-2024 $1,700
Median selected monthly owner costs - without a mortage, 2020-2024 $460
Median gross rent, 2020-2024 $1,138
Building Permits, 2025 312
Families & Living Arrangements
Households, 2020-2024 10,199
Persons per household, 2020-2024 3.23
Living in the same house 1 year ago, percent of persons age 1 year+ , 2020-2024 87.2%
Language other than English spoken at home, percent of persons age 5 years+, 2020-2024 11.6%
Computer and Internet Use
Households with a computer, percent, 2020-2024 97.4%
Households with a broadband Internet subscription, percent, 2020-2024 95.0%
Education
High school graduate or higher, percent of persons age 25 years+, 2020-2024 93.3%
Bachelor's degree or higher, percent of persons age 25 years+, 2020-2024 27.4%
Health
With a disability, under age 65 years, percent, 2020-2024 8.8%
Persons without health insurance, under age 65 years, percent 10.1%
Economy
In civilian labor force, total, percent of population age 16 years+, 2020-2024 66.1%
In civilian labor force, female, percent of population age 16 years+, 2020-2024 56.7%
Total accommodation and food services sales, 2022 ($1,000)(c) D
Total health care and social assistance receipts/revenue, 2022 ($1,000)(c) 38,409
Total transportation and warehousing receipts/revenue, 2022 ($1,000)(c) 97,610
Total retail sales, 2022 ($1,000)(c) 319,081
Total retail sales per capita, 2022(c) $9,572
Transportation
Mean travel time to work (minutes), workers age 16 years+, 2020-2024 25.1
Income & Poverty
Median households income (in 2024 dollars), 2020-2024 $86,679
Per capita income in past 12 months (in 2024 dollars), 2020-2024 $31,834
Persons in poverty, percent 8.5%
Businesses
Businesses
Total employer establishments, 2023 739
Total employment, 2023 5,599
Total annual payroll, 2023 ($1,000) 230,617
Total employment, percent change, 2022-2023 0.8%
Total nonemployer establishments, 2023 3,004
All employer firms, Reference year 2023 648
Male-owned employer firms, Reference year 2023 405
Female-owned employer firms, Reference year 2023 42
Minority-owned employer firms, Reference year 2023 9
Nonminority-owned employer firms, Reference year 2023 601
Veteran-owned employer firms, Reference year 2023 S
Nonveteran-owned employer firms, Reference year 2023 579
Geography
Geography
Population per square mile, 2020 28.2
Population per square mile, 2010 23.9
Land area in square miles, 2020 1,093.68
Land area in square miles, 2010 1,093.50
FIPS Code 16051