Lewiston

County:: Nez Perce County
County Seat:: Yes
Area (mi²):: 17.469
State:: Idaho

Lewiston is a city located in Nez Perce County, Idaho. Lewiston has a 2025 population of 35,230. It is also the county seat of Nez Perce County. Lewiston is currently growing at a rate of 0.56% annually and its population has increased by 2.88% since the most recent census, which recorded a population of 34,245 in 2020.

The average household income in Lewiston is $90,055 with a poverty rate of 13.32%.The median age in Lewiston is 39.7 years: 38.9 years for males, and 40.1 years for females.

Demographics

The racial composition of Lewiston includes 91.18% White, and smaller percentages for Native American, Asian, other race, Native Hawaiian or Pacific Islander, Black or African American and multiracial populations.

Population by Race

Race	Population	Percentage (of total)
White	31,431	91.18%
Two or more races	1,826	5.3%
Native American	458	1.33%
Asian	335	0.97%
Other race	288	0.84%
Native Hawaiian or Pacific Islander	101	0.29%
Black or African American	32	0.09%

Lewiston Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Lewiston's average per capita income is $47,614. Household income levels show a median of $71,047. The poverty rate stands at 13.32%.

Families: A family includes the owner or renter of the home along with everyone related to them - whether through birth, marriage, or adoption. This includes relatives like spouses, children, parents, siblings, grandparents, and any other family members.

Households: A household includes all the people who occupy a housing unit (such as a house or apartment) as their usual place of residence.

Non Families: A nonfamily household is either someone living alone or when the owner/renter lives with people they aren't related to, like roommates.

Name	Median	Mean
Married Families	$102,140	-
Families	$91,565	$108,529
Households	$71,047	$90,055
Non Families	$37,165	$54,632

$47,614

Average Income

$71,047

Median Household Income

13.32%

Poverty Rate