10th most populous of 44
With 42,847 residents in 2024, Nez Perce County ranks 10th by population among Idaho's 44 counties and is home to 2.1% of the state's residents.

Nez Perce County has the 7th largest economy in Idaho ($3.1 billion GDP) and the 8th smallest immigrant share (1.7% foreign-born).
Nez Perce County is home to 42,847 people (2024 estimate) on 848 square miles of land. This page brings together official U.S. Census Bureau population estimates since 2000, the components of change—births, deaths and migration—American Community Survey indicators on income, housing, poverty and education, BEA economic accounts and BLS unemployment.
Pick an indicator to see its long-run evolution.
U.S. Census Bureau: intercensal estimates 2000–2009, Vintage 2020 (2010–2019) and Vintage 2024 (2020–2024), July 1.
| Indicator | Value | Year and source |
|---|---|---|
| Population estimate | 42,847 | 2024 · U.S. Census Bureau |
| Population, 2010 Census | 39,265 | 2010 · U.S. Census Bureau |
| Population, 2000 | 37,398 | July 1, 2000 · Census intercensal |
| Change since 2000 | +14.6% | 2000–2024 · Census |
| International migration | +35 | 2024 · Census Vintage 2024 |
| Domestic migration | +100 | 2024 · Census Vintage 2024 |
| Birth rate | 8.9 per 1,000 | 2024 · calculated |
| Death rate | 15.2 per 1,000 | 2024 · calculated |
| Population rank in Idaho | 10th of 44 | 2024 · calculated |
| Per capita personal income | $59,776 | BEA, 2024 · official |
| Gross domestic product | $3.1 billion | BEA, current dollars, 2024 · official |
| Median household income | $72,599 | ACS 2020–2024 5-year · official |
| Poverty rate | 12.2% | ACS 2020–2024 5-year · official |
| Bachelor’s degree or higher | 27.1% | Age 25+, ACS 2020–2024 5-year · official |
| Foreign-born residents | 1.7% | ACS 2020–2024 5-year · official |
| Median home value | $334,700 | ACS 2020–2024 5-year · official |
| Median gross rent | $1,015/month | ACS 2020–2024 5-year · official |
| Median age | 41.2 years | ACS 2020–2024 5-year · official |
| Households | 17,270 | ACS 2020–2024 5-year · official |
| Owner-occupied homes | 70.4% | ACS 2020–2024 5-year · official |
Comparable indicators for Nez Perce County, Idaho and the United States.
| Indicator | County | Idaho | U.S. | Reference |
|---|---|---|---|---|
| Population change 2020–2024 | +1.8% | +8.8% | +2.6% | Census Vintage 2024 |
| Birth rate (per 1,000) | 8.9 | 11.4 | 10.6 | 2024 |
| Death rate (per 1,000) | 15.2 | 8.3 | 9.1 | 2024 |
| Net migration rate (per 1,000) | 3.2 | 12.1 | 8.2 | 2024 |
| Population density (/mi²) | 50.5 | 24.2 | 96.3 | 2024 |
| Per capita personal income | $59,776 | $62,323 | $73,204 | BEA, 2024 |
| Median household income | $72,599 | $77,800 | $80,734 | ACS 2020–2024 5-year |
| Poverty rate | 12.2% | 10.6% | 12.5% | ACS 2020–2024 5-year |
| Bachelor’s degree or higher | 27.1% | 31.8% | 35.7% | Age 25+, ACS 2020–2024 5-year |
| Foreign-born residents | 1.7% | 5.9% | 14.1% | ACS 2020–2024 5-year |
| Median home value | $334,700 | $418,600 | $332,700 | ACS 2020–2024 5-year |
| Median gross rent | $1,015/month | $1,238/month | $1,413/month | ACS 2020–2024 5-year |
| Median age | 41.2 years | 37.3 years | 38.9 years | ACS 2020–2024 5-year |
| Owner-occupied homes | 70.4% | 72.1% | 65.2% | ACS 2020–2024 5-year |
With 42,847 residents in 2024, Nez Perce County ranks 10th by population among Idaho's 44 counties and is home to 2.1% of the state's residents.
Its population went from 37,398 in 2000 to 42,847 in 2024, a change of +14.6%, compared with +54.0% for Idaho as a whole.
In the year to July 2024 the county recorded 383 births and 650 deaths, so deaths outnumbered births by 267.
Annual Census estimates since 2000 put the county's highest population at 43,003 in 2022. The 2024 figure is 156 lower.
Nez Perce County has about 50.5 residents per square mile of land, ranking 8th of 44 counties; Idaho averages 24.2.
With a median household income of $72,599 (ACS 2020–2024 5-year), the county ranks 14th of 44 Idaho counties; the state median is $77,800.
Its economy produced $3.1 billion of GDP in 2024 (BEA), 7th largest among 44 Idaho counties.
Real GDP fell 0.1% in 2024, adjusted for inflation (BEA, chained 2017 dollars).