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 distinguished by its share of foreign-born residents, 58.2% of the population. Elmore County is a county in Idaho with a population of 29,046. It ranks #13 among counties in Idaho by population.
The typical household here earns about $58,976, below the US median of $78,538. About 8.2% of residents live below the federal poverty level, below the national 12.4%. Home values run above average at $278,300, with typical rent around $1,111.
Degree attainment is mid-range for US counties: 21.2% of adults hold a four-year degree, below the national 35.0%. Home-based work is uncommon, at 3.2%, below the national 14.0%, and the average commute runs about 22 minutes each way.
The large foreign-born share is a defining thread in Elmore County, shaping language, household composition, and the labor force behind the economic figures above.
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.