City · Idaho
Kamiah, Idaho
Kamiah, city, mostly in Lewis County (99.4% of its 2020 residents), with a part in Idaho County, Idaho. Kamiah had 1,134 residents on July 1, 2025 by the Census Bureau's estimate, up 1.5% since 2020; the 2020 Census counted 1,117 and the ACS 2020-2024 5-year estimates put it at 1,084 (±119). GEOID 1642400.
Residents, July 2025 estimate
1,134
Census Bureau estimate (no margin published)
2020 Census count: 1,117 · ACS 2020-2024: 1,084 ±119
Median household income
$36,071
±$7,199 (90% margin)
Idaho: $77,800
Median home value
$222,500
±$30,071 (90% margin)
Idaho: $418,600
Median gross rent
$543
±$123 (90% margin)
Idaho: $1,238
Where is Kamiah and what county is it in?
Kamiah is a city mostly in Lewis County (99.4% of its 2020 residents), with a part in Idaho County, Idaho. It covers 1.1 square miles of land, 1,017 residents per square mile in 2020.
| County | 2020 residents | Share |
|---|---|---|
| Lewis County | 1,110 | 99.4% |
| Idaho County | 7 | 0.6% |
Source: 2024 Gazetteer and 2020 place-by-county files, U.S. Census Bureau · Census reference files
How many people live in Kamiah, and is it growing?
The Census Bureau estimates that 1,134 people lived in Kamiah on July 1, 2025, up 1.5% since 2020, slower than Idaho (+10.4%). The 2020 Census counted 1,117 residents. The 2020-2024 American Community Survey, a five-year sample, puts the population at 1,084 (±119).
| Measure | Kamiah | Lewis County | Change since 2015-2019 |
|---|---|---|---|
| Total population | 1,084 ±119 | 3,682 | −172 |
| Households | 546 ±55 | 1,574 | no clear change |
| Average household size | 1.99 ±0.13 | 2.28 | −0.28 |
| Housing units | 637 ±50 | 1,826 | no clear change |
Kamiah's population since 2000
From 1,160 in 2000 to 1,134 in 2025: down 2.2%. The 2000, 2010 and 2020 figures are census counts, each for Kamiah as it was drawn that year: a place that annexed land, or a community that has since incorporated, covered a different area then. 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); Census PEP Vintage 2025 (SUB-EST2025, CO-EST2025); 2020 Census P.L. 94-171 · Check it at data.census.gov
Who lives in Kamiah?
The median resident of Kamiah is 53.3 years old; 16.3% are under 18 and 32.8% are 65 or older. The largest group is non-Hispanic white residents at 78.6%, then non-Hispanic residents of two or more races at 7.3%.
| Measure | Kamiah | Lewis County | Change since 2015-2019 |
|---|---|---|---|
| Median age | 53.3 ±4.6 | 49.0 | no clear change |
| Under 18 years | 16.3% ±4.1 pts | 21.9% | – |
| 65 years and over | 32.8% ±4.9 pts | 28.3% | – |
| Male | 44.6% ±3.6 pts | 50.2% | – |
| Hispanic or Latino (any race) | 7.1% ±2.8 pts | 4.3% | no clear change |
| White alone, not Hispanic | 78.6% ±5.2 pts | 81.7% | no clear change |
| Black or African American alone, not Hispanic | 0.8% ±1.1 pts | 1.1% | – |
| Asian alone, not Hispanic | 1.6% ±1.3 pts | 1.0% | – |
| American Indian and Alaska Native alone, not Hispanic | 1.7% ±1.4 pts | 1.3% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0% ±3.2 pts | 0.0% | – |
| Two or more races, not Hispanic | 7.3% ±3.4 pts | 9.7% | – |
| Some other race alone, not Hispanic | 3.0% ±3.4 pts | 0.9% | – |
| Born outside the United States | 2.0% ±1.6 pts | 1.2% | – |
| Speak a language other than English at home (age 5+) | 7.3% ±3.8 pts | 3.8% | – |
| Civilian veterans (age 18+) | 10.5% ±2.8 pts | 10.8% | – |
| With a disability | 30.5% ±5.9 pts | 24.0% | – |
| No health insurance coverage | 13.0% ±4.2 pts | 11.1% | no clear change |
| High school graduate or higher (age 25+) | 90.0% ±3.6 pts | 91.4% | – |
| Bachelor's degree or higher (age 25+) | 19.8% ±4.2 pts | 21.3% | +6.8 pts |
| Graduate or professional degree (age 25+) | 6.3% ±2.3 pts | 7.3% | – |
| Lived in the same house a year earlier | 90.4% ±3.3 pts | 88.7% | – |
| Moved from another state in the past year | 4.6% ±2.2 pts | 3.2% | – |
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 Kamiah earn?
Half of Kamiah's 546 households earn less than $36,071 a year (±$7,199), against $51,615 in Lewis County and $77,800 in Idaho. In 2015-2019 it was $38,695 in 2024 dollars; the margins of error cannot tell the two periods apart. 17.5% of residents live below the poverty line.
| Measure | Kamiah | Lewis County | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $36,071 ±$7,199 | $51,615 | no clear change |
| Mean household income | $55,255 ±$8,393 | $73,126 | – |
| Per capita income | $27,937 ±$3,328 | $31,902 | +$4,907 |
| People below the poverty line | 17.5% ±5.1 pts | 15.3% | no clear change |
| Children under 18 below the poverty line | 24.3% ±11.8 pts | 17.6% | no clear change |
| Households receiving SNAP | 10.8% ±4.6 pts | 9.8% | – |
| Households with a computer | 81.0% ±7.5 pts | 88.8% | – |
| Households with a broadband subscription | 74.9% ±7.3 pts | 81.9% | – |
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 Kamiah?
Owners occupy 69.4% of Kamiah's occupied homes and renters 30.6%. The median owner-occupied home is valued at $222,500 by its owner (±$30,071). The median renter pays $543 a month including utilities, and 17.4% of renters pay 35% or more of their income on rent.
| Measure | Kamiah | Lewis County | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $222,500 ±$30,071 | $225,300 | +$57,464 |
| Median gross rent | $543 ±$123 | $737 | no clear change |
| Renters paying 35% or more of income on rent | 17.4% ±9.6 pts | 18.6% | −16.7 pts |
| Median monthly owner costs, with a mortgage | $1,229 ±$115 | $1,300 | – |
| Owner-occupied homes | 69.4% ±5.8 pts | 76.4% | +21.3 pts |
| Renter-occupied homes | 30.6% ±5.8 pts | 23.6% | – |
| Housing units | 637 ±50 | 1,826 | no clear change |
| Homeowner vacancy rate | 1.8% ±2.0 pts | 2.2% | – |
| Rental vacancy rate | 8.1% ±6.1 pts | 4.1% | – |
| Single-family detached homes | 73.0% ±4.5 pts | 79.4% | – |
| Mobile homes | 9.3% ±3.2 pts | 12.5% | – |
| Built 2020 or later | 0.5% ±0.8 pts | 0.5% | – |
| Built 2010 to 2019 | 4.1% ±3.1 pts | 4.8% | – |
| Built 1939 or earlier | 25.0% ±7.9 pts | 26.7% | – |
| Households with no vehicle | 7.0% ±3.8 pts | 3.4% | – |
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 Kamiah building?
Builders took permits for 2 new housing units in Kamiah in 2025 (2 in single-family houses), 1.8 per 1,000 residents against 8.8 across Idaho.
Counts of units in permits a local office issued; not every permitted unit is built. A year marked with months was reported for part of the year.
Source: Building Permits Survey, annual place files 2019-2025, U.S. Census Bureau · Census Building Permits Survey
How do people in Kamiah work and get to work?
71.9% of Kamiah's workers drive alone. The average trip to work takes 15.3 minutes.
| Measure | Kamiah | Lewis County | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 42.3% ±5.7 pts | 47.6% | – |
| Unemployment rate | 4.6% ±4.0 pts | 2.4% | – |
| Drove alone to work | 71.9% ±9.1 pts | 73.6% | – |
| Carpooled | 13.2% ±6.2 pts | 8.8% | – |
| Public transportation | 0.0% ±9.2 pts | 0.0% | – |
| Walked | 3.9% ±3.4 pts | 3.7% | – |
| Worked from home | 9.4% ±6.4 pts | 12.6% | – |
| Mean travel time to work | 15.3 min ±2.7 | 21.4 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 census tracts are in Kamiah?
1 census tract lies mostly in Kamiah, and 1 more reaches into it (2020 census blocks).
| Tract | Residents, 2020-2024 | Median household income |
|---|---|---|
| Tract 9400.01Lewis County | 1,535 | $40,347 |
| Tract 9400Idaho County | 4,921 | $58,835 |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); 2020 block assignment files (tract share = share of the tract's census blocks in Kamiah) · Census block assignment files
How does Kamiah compare with other places in Idaho?
By the Census Bureau's July 2025 estimates, Kamiah is the 9,786th-most populous of the 19,476 U.S. incorporated places that have one and the 81st-most populous of 198 in Idaho.
Kamiah ranks 90th of 90 places in Idaho with 1,000 or more residents and a reliable estimate, by median household income.
| Measure | Rank | Of |
|---|---|---|
| Population, July 2025 estimate | 81st | 198 |
| Growth 2020-2025 (PEP) | 73rd | 83 |
| Residents per square mile | 68th | 91 |
| Median household income | 90th | 90 |
| Per capita income | 66th | 91 |
| Median home value | 80th | 90 |
| Median gross rent | 83rd | 84 |
| Poverty rate | 18th | 76 |
| Bachelor's degree or higher | 50th | 90 |
| Median age | 3rd | 90 |
| Owner-occupied share | 49th | 90 |
| Travel time to work | 77th | 90 |
Kamiah's figures with every place in Idaho (CSV)
Every place in Idaho, sortable · Compare Kamiah with other places
Source: PlainCities ranks computed 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 reliable are the figures for Kamiah?
14 of the 57 figures for Kamiah on this page carry a coefficient of variation over 40% and are marked with a ring: they come from a small sample, so read them as rough.
The American Community Survey samples about one household in eight over five years, so every figure is an estimate with a 90% margin of error (shown under each value). A ring marks an estimate whose coefficient of variation is over 40%. A change is called only when the gap between the two periods is larger than their combined 90% margin (the square root of the sum of the two squared margins), the Census Bureau's test. How to read a margin of error.
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026): margins of error as published · ACS technical documentation
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 Kamiah 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' public schools in Kamiah.