County · Idaho
Idaho County, Idaho
Idaho County, Idaho. Idaho County had 17,874 residents in 2025 by the Census Bureau's estimate, up 8.0% since 2020, slower than Idaho (+10.4%). It holds 9 places (8 cities, villages and boroughs and 1 census-designated) and 6 census tracts. GEOID 16049.
Residents, July 2025 estimate
17,874
Census Bureau estimate (no margin published)
2020 Census count: 16,541 · ACS 2020-2024: 17,432
Median household income
$66,325
±$6,132 (90% margin)
Idaho: $77,800
Median home value
$310,200
±$19,976 (90% margin)
Idaho: $418,600
Median gross rent
$789
±$124 (90% margin)
Idaho: $1,238
How many people live in Idaho County, and is it growing?
The 2020 Census counted 16,541 residents in Idaho County. The Census Bureau estimates 17,874 for July 1, 2025, up 8.0% since 2020, slower than Idaho (+10.4%). The 2020-2024 American Community Survey puts the population at 17,432 over 8,477 square miles of land.
| Measure | Idaho County | Idaho | Change since 2015-2019 |
|---|---|---|---|
| Total population | 17,432 | 1,934,262 | +1,021 |
| Households | 6,776±296 | 713,005 | no clear change |
| Average household size | 2.48±0.11 | 2.64 | no clear change |
| Housing units | 8,903±32 | 795,014 | +131 |
Idaho County's population since 2000
From 15,511 in 2000 to 17,874 in 2025: up 15.2%. The 2000, 2010 and 2020 figures are census counts. The 2005 figure is the Census Bureau's intercensal estimate, revised to fit the 2000 and 2010 counts and drawn on 2010 boundaries; 2015 and 2025 are July 1 estimates made from the census before them.
Source: The 2000, 2010 and 2020 Census counts and the Census Bureau's population estimates (intercensal 2000-2010, Vintage 2020, Vintage 2025) · Census population estimates
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); PEP Vintage 2025 (CO-EST2025); 2020 Census · Check it at data.census.gov
What cities and towns are in Idaho County?
Idaho County holds 9 places: 8 cities, villages and boroughs (incorporated places) and 1 census-designated place. The largest is Grangeville with 3,621 residents (2025 estimate). Places that cross a county line are listed with the share of their 2020 residents who live in this county.
| Grangeville | 3,308 | $61,322 |
|---|---|---|
| Cottonwood | 822 | $79,271 |
| Kooskia | 514 | $45,938 |
| Riggins | 372 | $31,471 |
| StitesGEOID 1677500 | 171 | $28,438 |
| Elk CityGEOID 1625030 | 170 | $61,103 |
| FerdinandGEOID 1627460 | 133 | $72,500 |
| White BirdGEOID 1687310 | 83 | not published |
| Kamiah | 1,117 | $36,071 |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); 2020 place-by-county parts · Check it at data.census.gov
Who lives in Idaho County?
The median resident of Idaho County is 49.4 years old; 19.8% are under 18 and 29.4% are 65 or older. The largest group is non-Hispanic white residents at 89.1%, then Hispanic or Latino residents (of any race) at 4.0%. 2.1% of residents were born outside the United States.
| Measure | Idaho County | Idaho | Change since 2015-2019 |
|---|---|---|---|
| Median age | 49.4±0.3 | 37.3 | −0.8 |
| Under 18 years | 19.8%±0.2 pts | 24.1% | – |
| 65 years and over | 29.4%±0.3 pts | 17.0% | – |
| Hispanic or Latino (any race) | 4.0% | 13.6% | +0.6 pts |
| White alone, not Hispanic | 89.1%±0.7 pts | 78.6% | −1.9 pts |
| Black or African American alone, not Hispanic | 0.1%±0.2 pts | 0.7% | – |
| Asian alone, not Hispanic | 0.5%±0.2 pts | 1.3% | – |
| American Indian and Alaska Native alone, not Hispanic | 1.8%±0.6 pts | 0.7% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0%±0.1 pts | 0.1% | – |
| Two or more races, not Hispanic | 3.8%±0.7 pts | 4.2% | – |
| Some other race alone, not Hispanic | 0.6%±0.7 pts | 0.6% | – |
| Born outside the United States | 2.1%±0.9 pts | 5.9% | no clear change |
| Speak a language other than English at home (age 5+) | 3.7%±1.2 pts | 11.0% | – |
| Civilian veterans (age 18+) | 10.1%±1.4 pts | 8.0% | – |
| With a disability | 17.7%±1.8 pts | 14.1% | – |
| No health insurance coverage | 14.2%±2.7 pts | 9.1% | +3.3 pts |
| High school graduate or higher (age 25+) | 91.9%±1.5 pts | 91.9% | – |
| Bachelor's degree or higher (age 25+) | 22.6%±2.6 pts | 31.8% | no clear change |
| Graduate or professional degree (age 25+) | 6.6%±1.6 pts | 10.5% | – |
| Moved from another state in the past year | 3.7%±1.2 pts | 4.6% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profiles DP02, DP05) · Check it at data.census.gov
What do households in Idaho County earn?
Half of Idaho County's 6,776 households earn less than $66,325 a year (±$6,132), against $77,800 in Idaho. In 2015-2019 the median was $51,093 in 2024 dollars, so it rose by $15,232 after inflation. 11.1% of residents live below the poverty line.
| Measure | Idaho County | Idaho | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $66,325±$6,132 | $77,800 | +$15,232 |
| Mean household income | $81,593±$5,457 | $102,747 | – |
| Per capita income | $33,585±$1,994 | $38,952 | +$5,683 |
| People below the poverty line | 11.1%±1.9 pts | 10.6% | no clear change |
| Children under 18 below the poverty line | 9.4%±3.9 pts | 12.4% | no clear change |
| Households receiving SNAP | 4.6%±1.3 pts | 7.6% | – |
| Households with a broadband subscription | 87.4%±2.5 pts | 91.9% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov
What does housing cost in Idaho County?
Owners occupy 80.9% of Idaho County's occupied homes and renters 19.1%. The median owner-occupied home is valued at $310,200 by its owner (±$19,976). The median renter pays $789 a month including utilities, and 26.8% of renters pay 35% or more of their income on rent.
| Measure | Idaho County | Idaho | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $310,200±$19,976 | $418,600 | +$97,044 |
| Median gross rent | $789±$124 | $1,238 | no clear change |
| Renters paying 35% or more of income on rent | 26.8%±10.5 pts | 36.9% | no clear change |
| Median monthly owner costs, with a mortgage | $1,407±$63 | $1,687 | – |
| Owner-occupied homes | 80.9%±2.8 pts | 72.1% | +4.2 pts |
| Housing units | 8,903±32 | 795,014 | +131 |
| Homeowner vacancy rate | 0.4%±0.3 pts | 0.7% | – |
| Rental vacancy rate | 2.9%±1.9 pts | 3.9% | – |
| Single-family detached homes | 80.1%±2.8 pts | 73.8% | – |
| Mobile homes | 12.7%±2.2 pts | 6.9% | – |
| Built 2020 or later | 1.3%±0.5 pts | 3.9% | – |
| Built 1939 or earlier | 12.6%±2.3 pts | 7.9% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP04) · Check it at data.census.gov
How many new homes is Idaho County building?
Builders took permits for 6 new housing units across Idaho County in 2025 (6 single-family), 0.3 per 1,000 residents.
Source: Building Permits Survey, annual county files 2019-2025, U.S. Census Bureau · Census Building Permits Survey
How do people in Idaho County get to work?
68.6% of Idaho County's workers drive alone and 9.9% work from home. The average trip to work takes 19.9 minutes. The unemployment rate in 2020-2024 averaged 3.7%.
| Measure | Idaho County | Idaho | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 48.7%±2.2 pts | 63.0% | – |
| Unemployment rate | 3.7%±1.5 pts | 3.7% | no clear change |
| Drove alone to work | 68.6%±4.1 pts | 72.7% | – |
| Carpooled | 12.5%±3.4 pts | 8.9% | – |
| Public transportation | 0.0%±0.5 pts | 0.5% | – |
| Walked | 6.8%±3.4 pts | 2.6% | – |
| Worked from home | 9.9%±2.1 pts | 13.3% | +3.0 pts |
| Mean travel time to work | 19.9 min±2.2 | 21.6 min | no clear change |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov
What are Idaho County's census tracts?
Idaho County is divided into 6 census tracts. Among those with a reliable estimate, median household income runs from $56,845 (Tract 9604) to $80,906 (Tract 9603).
| Tract 940016049940000 | 4,921±403 | $58,835 |
|---|---|---|
| Tract 960116049960100 | 2,142±338 | $65,156 |
| Tract 9602.0116049960201 | 1,782±267 | $64,306 |
| Tract 9602.0216049960202 | 4,865±524 | $76,146 |
| Tract 960316049960300 | 2,608±318 | $80,906 |
| Tract 960416049960400 | 1,114±177 | $56,845 |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) · Check it at data.census.gov
How does Idaho County compare with Idaho's other counties?
| Measure | Rank |
|---|---|
| Population | 20th of 44 |
| Growth 2020-2025 | 24th of 44 |
| Residents per square mile | 38th of 44 |
| Median household income | 27th of 44 |
| Median home value | 25th of 44 |
| Median gross rent | 37th of 44 |
| Poverty rate | 25th of 43 |
| Bachelor's degree or higher | 23rd of 44 |
| Median age | 6th of 44 |
Source: PlainCities ranks from the American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) and PEP Vintage 2025 · How ranks are computed
How these figures are made: methodology and release checks · reading a margin of error · every state · corrections
Not on this page: crime, weather and schools for Idaho County are other agencies' records. Crime: the FBI's Crime Data Explorer · climate: NOAA's U.S. Climate Normals · schools: the National Center for Education Statistics' school search.