Elmore County, Idaho Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 13th-largest in Idaho
The population of Elmore County, Idaho is 29,046 as of the 2023 American Community Survey, making it the 13th-largest county in Idaho. The median household income is $58,976, the median home value is $278,300, and the median age is 32.5.
The population of Elmore County has grown 9.6% since 2010 (27,125 → 29,729), a +0.66% annualized rate.
29,046
Population
+0.66%
Annual growth
9
People / sq mi
$58,976
Median Income
$278,300
Median Home Value
Elmore County covers 3,075 sq mi of land at 9.4 people per square mile.
About Elmore County, ID
Elmore County is a county in Idaho with a population of 29,046. It ranks #13 among counties in Idaho by population. The median age is 32.5, younger than the national median. The population is 53.3% male and 46.7% female.
The median household income in Elmore County is $58,976, below the US median of $74,580. 8.2% of residents live below the federal poverty level. Home values sit at a median of $278,300, with monthly rent averaging $1,111. The homeownership rate of 65.3% is close to the national rate of 64.8%.
Educational attainment in Elmore County reflects 21.2% of adults 25 and older holding a bachelor's degree or higher, below the national average of 34.3%. Roughly 3.2% of workers primarily work from home, below the national work-from-home rate of 14.2%. The average commute is 22.0 minutes each way.
Elmore County Population History (2010-2024)
The county of Elmore County had a population of 27,125 in 2010 and 29,729 in 2024, a 9.6% growth over 14 years. The peak was 29,729 in 2024. Average annual growth rate: 0.67%.
29,729
Population (2024)
27,125
Population (2010)
29,729
Peak (2024)
0.67%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 27,125 |
| 2011 | 26,237 |
| 2012 | 26,314 |
| 2013 | 26,296 |
| 2014 | 26,257 |
| 2015 | 25,861 |
| 2016 | 26,178 |
| 2017 | 26,907 |
| 2018 | 27,309 |
| 2019 | 27,373 |
| 2020 | 28,680 |
| 2021 | 28,994 |
| 2022 | 29,494 |
| 2023 | 29,706 |
| 2024 | 29,729 |
Race & Ethnicity
| White | 74.5% |
| Black or African American | 3.2% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 3.6% |
| Two or More Races | 0.2% |
Age & Sex
32.5
Median Age
46.7%
Female
53.3%
Male
14.2%
Age 65+
Age Distribution
Children (under 15): 20.9% · Seniors (65+): 14.2%
Income & Poverty
| Median household income | $58,976$-15,660 vs state |
| Mean household income | $76,919 |
| Per-capita income | $30,146 |
| Poverty rate | 8.2%+1.2% vs state |
| Unemployment rate | 3.2% |
| Employment-to-population | 45.2% |
Top Industries by Employment
The largest employment sector in Elmore County is professional & business services, accounting for 16.7% of workers.
How residents commute
0.1%
Drive alone
3.4%
Carpool
83.7%
Public transit
3.2%
Work from home
22.0 min
Avg commute
Housing
$278,300$-97,700 vs state
Median home value
$1,111
Median rent
65.3%
Homeownership rate
12,168
Total housing units
89.2%
Occupied
10.8%
Vacant
34.7%
Renter-occupied
Social & access
87.8%
With health insurance
94.8%
With broadband internet
58.2%
Foreign-born
20.9%
Veterans (18+)
16.9%
With a disability
86.1%
Speak language other than English at home
Education
88.1%
High School+
21.2%
Bachelor's+
Largest cities in Idaho
Other counties in Idaho
Part of Idaho
Metro areas in Idaho
County rankings
Frequently Asked Questions
Elmore County, Idaho has a population of 29,046 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 13th-largest county in Idaho. Population density is 9 people per square mile.
The population of Elmore County has grown 9.6% since 2010 (27,125 → 29,729), a +0.66% annualized rate.
The median household income in Elmore County, Idaho is $58,976, with mean (average) household income of $76,919 and per-capita income of $30,146. 8.2% of residents live below the federal poverty level.
In Elmore County, the largest racial and ethnic groups are White (74.5%), Hispanic or Latino (3.6%), Black or African American (3.2%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Elmore County, Idaho is 32.5 years. Residents are 46.7% female and 53.3% male.
The median home value in Elmore County is $278,300 and median monthly rent is $1,111. 65.3% of occupied housing units are owner-occupied. The county has 12,168 total housing units, 10.8% of which are vacant.
The largest employment sector in Elmore County, Idaho is professional, scientific, and management services, employing 16.7% of workers. The unemployment rate is 3.2%.
Boise City is among the largest cities associated with Elmore County, Idaho, with a population of 235,701.
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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.