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Lewis County, ID
5 cities and towns and 2 ZIP codes in Lewis County, Idaho.
Population
3,682
Land area
479sq mi
People per sq mi
8
ZIP codes
2
Cities and towns in Lewis County
Lewis County at a glance
- Lewis County is 67% less dense than Idaho as a whole.
- The median household income is $51,615, 34% below the Idaho median of $77,800.
- A typical owner-occupied home is valued at $225,300 (46% below Idaho) and median rent is $737 a month.
- Its largest cities are Kamiah (1,084), Nezperce (522) and Craigmont (509).
Local data for Lewis County, ID
Counts from official public data
Housing and community stats
Lewis County, ID, American Community Survey 2020-2024
Median household income
$51,615
Poverty rate
15.3%
Median home value
$225,300
Median rent
$737/mo
Homeownership
76.4%
Bachelor's or higher
21.3%
Median age
49.0
Average commute
21.4 min
Largest reported origins and ancestries: German Americans (813), Irish Americans (574), Scottish Americans (172).
Economy and federal money
Jobs, income, federal spending and pandemic loans
Unemployment rate
3.8%
Aug 2026, -1.2 pts in a year
Average annual pay
$44,584
1,554 jobs, 2025
Income per person
$57,419
BEA, 2024
Federal spending
$62.43M
FY 2026, $17,670 per person
PPP loans
$1.94M
76 loans, 253 jobs reported
Campaign donations
$3,654
Itemized, 2026 cycle
How people get to work
Lewis County, ID, workers 16 and older. American Community Survey 5-year estimates
- Drove alone73.6%
- Carpooled8.8%
- Public transit0.0%
- Walked3.7%
- Bicycle0.7%
- Taxi, ride-hailing, motorcycle or other0.6%
- Worked from home12.6%
Average one-way commute: 21.4 minutes for people who do not work from home.
Environment and hazard risk
Lewis County, ID, from FEMA, NOAA and EPA
Natural hazard risk
Very Low
Top: wildfire
Storm events since 1996
156
Most often heavy snow
Flood insurance policies
16
0.9% of homes, county
July high / Jan low
80° / 22°F
20.0 inches of rain a year
Hazards, floods and storm historyCheck a flood zone3 historic places
Health statistics
Share of adults in Lewis County, ID, CDC PLACES estimates
Obesity
35.2%
U.S. 33.3% +1.9 pts
Diabetes
15.1%
U.S. 12.1% +3.0 pts
Smoking
15.5%
U.S. 12.8% +2.7 pts
Uninsured (18-64)
10.5%
U.S. 11.1% -0.6 pts
Cities, towns and ZIP codes in Lewis County
Population shown
Frequently asked questions
- What is the largest city in Lewis County, ID?
- Kamiah is the largest city or town in Lewis County, with about 1,084 residents.
- How many ZIP codes are in Lewis County?
- Lewis County includes 2 ZIP Code Tabulation Areas, including 83523, 83543.
- What is the population of Lewis County, ID?
- About 3,682 people live in Lewis County, based on American Community Survey 5-year estimates.
- What counties border Lewis County?
- Lewis County borders Nez Perce County, Idaho County, Clearwater County.
Source: U.S. Census Bureau (TIGER/Line boundaries, American Community Survey) · Data as of 12/31/2023