Jerome County, Idaho Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 16th-largest in Idaho
The population of Jerome County, Idaho is 24,788 as of the 2023 American Community Survey, making it the 16th-largest county in Idaho. The median household income is $69,338, the median home value is $254,000, and the median age is 33.6.
The population of Jerome County has grown 16.1% since 2010 (22,438 → 26,056), a +1.07% annualized rate.
24,788
Population
+1.07%
Annual growth
41
People / sq mi
$69,338
Median Income
$254,000
Median Home Value
Jerome County covers 598 sq mi of land at 41.5 people per square mile.
About Jerome County, ID
Jerome County is a county in Idaho with a population of 24,788. It ranks #16 among counties in Idaho by population. The median age is 33.6, younger than the national median. The population is 51.6% male and 48.4% female.
The median household income in Jerome County is $69,338, below the US median of $74,580. 12.6% of residents live below the federal poverty level. Home values sit at a median of $254,000, with monthly rent averaging $862. The homeownership rate of 75.5% is higher than the national rate of 64.8%.
Educational attainment in Jerome County reflects 13.4% of adults 25 and older holding a bachelor's degree or higher, below the national average of 34.3%. Roughly 4.9% of workers primarily work from home, below the national work-from-home rate of 14.2%. The average commute is 20.7 minutes each way.
Jerome County Population History (2010-2024)
The county of Jerome County had a population of 22,438 in 2010 and 26,056 in 2024, a 16.1% growth over 14 years. The peak was 26,056 in 2024. Average annual growth rate: 1.08%.
26,056
Population (2024)
22,438
Population (2010)
26,056
Peak (2024)
1.08%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 22,438 |
| 2011 | 22,516 |
| 2012 | 22,572 |
| 2013 | 22,759 |
| 2014 | 22,918 |
| 2015 | 22,960 |
| 2016 | 23,438 |
| 2017 | 23,791 |
| 2018 | 24,078 |
| 2019 | 24,486 |
| 2020 | 24,268 |
| 2021 | 24,740 |
| 2022 | 25,228 |
| 2023 | 25,574 |
| 2024 | 26,056 |
Race & Ethnicity
| White | 69.9% |
| Black or African American | 0.1% |
| Asian | 0.1% |
| Hispanic or Latino (any race) | 2.7% |
| Two or More Races | 0.0% |
Age & Sex
33.6
Median Age
48.4%
Female
51.6%
Male
13.4%
Age 65+
Age Distribution
Children (under 15): 24.4% · Seniors (65+): 13.4%
Income & Poverty
| Median household income | $69,338$-5,298 vs state |
| Mean household income | $87,894 |
| Per-capita income | $29,033 |
| Poverty rate | 12.6%+5.6% vs state |
| Unemployment rate | 2.4% |
| Employment-to-population | 62.8% |
Top Industries by Employment
The largest employment sector in Jerome County is agriculture, accounting for 16.2% of workers.
How residents commute
0.2%
Drive alone
0.7%
Carpool
83.5%
Public transit
4.9%
Work from home
20.7 min
Avg commute
Housing
$254,000$-122,000 vs state
Median home value
$862
Median rent
75.5%
Homeownership rate
8,725
Total housing units
94.0%
Occupied
6.0%
Vacant
24.5%
Renter-occupied
Social & access
84.2%
With health insurance
94.1%
With broadband internet
29.5%
Foreign-born
6.0%
Veterans (18+)
12.7%
With a disability
66.3%
Speak language other than English at home
Education
73.4%
High School+
13.4%
Bachelor's+
Largest cities in Idaho
Other counties in Idaho
Part of Idaho
Metro areas in Idaho
County rankings
Frequently Asked Questions
Jerome County, Idaho has a population of 24,788 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 16th-largest county in Idaho. Population density is 41 people per square mile.
The population of Jerome County has grown 16.1% since 2010 (22,438 → 26,056), a +1.07% annualized rate.
The median household income in Jerome County, Idaho is $69,338, with mean (average) household income of $87,894 and per-capita income of $29,033. 12.6% of residents live below the federal poverty level.
In Jerome County, the largest racial and ethnic groups are White (69.9%), Hispanic or Latino (2.7%), Black or African American (0.1%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Jerome County, Idaho is 33.6 years. Residents are 48.4% female and 51.6% male.
The median home value in Jerome County is $254,000 and median monthly rent is $862. 75.5% of occupied housing units are owner-occupied. The county has 8,725 total housing units, 6.0% of which are vacant.
The largest employment sector in Jerome County, Idaho is agriculture, forestry, fishing, and mining, employing 16.2% of workers. The unemployment rate is 2.4%.
Boise City is among the largest cities associated with Jerome County, Idaho, with a population of 235,701.
More from Idaho
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Full rankings of Idaho counties
Statewide data for Idaho
Population, race, income, age, and trends across Idaho
Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.