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 distinguished by its share of foreign-born residents, 44.8% of the population. Nez Perce County is a county in Idaho with a population of 42,477. It is the #10-largest of all counties in Idaho nationally.
Median household income is $71,466, below the US median of $78,538. The poverty rate is 8.8%, below the national 12.4%. Home values run above average at $291,300, with typical rent around $936.
About 26.8% of adults 25 and older have a bachelor’s degree, below the 35.0% national figure. About 7.2% of the workforce is home-based, below the national 14.0%, and the average commute runs about 17 minutes each way.
The large foreign-born share is a defining thread in Nez Perce County, shaping language, household composition, and the labor force behind the economic figures above.
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
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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.