Nez Perce County, Idaho Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 10th-largest in Idaho
The population of Nez Perce County, Idaho is 42,477 as of the 2023 American Community Survey, making it the 10th-largest county in Idaho. The median household income is $71,466, the median home value is $291,300, and the median age is 40.9.
The population of Nez Perce County has grown 9.0% since 2010 (39,317 → 42,847), a +0.62% annualized rate.
42,477
Population
+0.62%
Annual growth
50
People / sq mi
$71,466
Median Income
$291,300
Median Home Value
Nez Perce County covers 848 sq mi of land at 50.1 people per square mile.
About Nez Perce County, ID
Nez Perce County is a county in Idaho with a population of 42,477. It ranks #10 among counties in Idaho by population. The median age is 40.9, older than the national median. The population is 49.6% male and 50.4% female.
The median household income in Nez Perce County is $71,466, near the US median of $74,580. 8.8% of residents live below the federal poverty level. Home values sit at a median of $291,300, with monthly rent averaging $936. The homeownership rate of 72.2% is higher than the national rate of 64.8%.
Educational attainment in Nez Perce County reflects 26.8% of adults 25 and older holding a bachelor's degree or higher, below the national average of 34.3%. Roughly 7.2% of workers primarily work from home, below the national work-from-home rate of 14.2%. The average commute is 17.1 minutes each way.
Nez Perce County Population History (2010-2024)
The county of Nez Perce County had a population of 39,317 in 2010 and 42,847 in 2024, a 9.0% growth over 14 years. The peak was 43,003 in 2022. Average annual growth rate: 0.62%.
42,847
Population (2024)
39,317
Population (2010)
43,003
Peak (2022)
0.62%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 39,317 |
| 2011 | 39,444 |
| 2012 | 39,512 |
| 2013 | 39,819 |
| 2014 | 39,873 |
| 2015 | 40,039 |
| 2016 | 40,200 |
| 2017 | 40,376 |
| 2018 | 40,408 |
| 2019 | 40,601 |
| 2020 | 42,148 |
| 2021 | 42,511 |
| 2022 | 43,003 |
| 2023 | 42,978 |
| 2024 | 42,847 |
Race & Ethnicity
| White | 88.4% |
| Black or African American | 0.1% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 6.5% |
| Two or More Races | 0.2% |
Age & Sex
40.9
Median Age
50.4%
Female
49.6%
Male
20.5%
Age 65+
Age Distribution
Children (under 15): 17.5% · Seniors (65+): 20.5%
Income & Poverty
| Median household income | $71,466$-3,170 vs state |
| Mean household income | $91,289 |
| Per-capita income | $37,859 |
| Poverty rate | 8.8%+1.8% vs state |
| Unemployment rate | 1.7% |
| Employment-to-population | 58.0% |
Top Industries by Employment
The largest employment sector in Nez Perce County is professional & business services, accounting for 24.6% of workers.
How residents commute
0.2%
Drive alone
2.7%
Carpool
81.7%
Public transit
7.2%
Work from home
17.1 min
Avg commute
Housing
$291,300$-84,700 vs state
Median home value
$936
Median rent
72.2%
Homeownership rate
18,496
Total housing units
93.3%
Occupied
6.7%
Vacant
27.8%
Renter-occupied
Social & access
91.2%
With health insurance
93.9%
With broadband internet
44.8%
Foreign-born
8.5%
Veterans (18+)
17.3%
With a disability
96.5%
Speak language other than English at home
Education
92.9%
High School+
26.8%
Bachelor's+
Largest cities in Idaho
Other counties in Idaho
Part of Idaho
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County rankings
Frequently Asked Questions
Nez Perce County, Idaho has a population of 42,477 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 10th-largest county in Idaho. Population density is 50 people per square mile.
The population of Nez Perce County has grown 9.0% since 2010 (39,317 → 42,847), a +0.62% annualized rate.
The median household income in Nez Perce County, Idaho is $71,466, with mean (average) household income of $91,289 and per-capita income of $37,859. 8.8% of residents live below the federal poverty level.
In Nez Perce County, the largest racial and ethnic groups are White (88.4%), Hispanic or Latino (6.5%), Two or more races (0.2%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Nez Perce County, Idaho is 40.9 years. Residents are 50.4% female and 49.6% male.
The median home value in Nez Perce County is $291,300 and median monthly rent is $936. 72.2% of occupied housing units are owner-occupied. The county has 18,496 total housing units, 6.7% of which are vacant.
The largest employment sector in Nez Perce County, Idaho is professional, scientific, and management services, employing 24.6% of workers. The unemployment rate is 1.7%.
Boise City is among the largest cities associated with Nez Perce 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.