Onalaska

County:: Lewis County
County Seat:: No
Area (mi²):: 1.604
State:: Washington

Onalaska is a CDP located in Lewis County, Washington. Onalaska has a 2025 population of 593. Onalaska is currently declining at a rate of -0.34% annually but its population has increased by 37.59% since the most recent census, which recorded a population of 431 in 2020.

The average household income in Onalaska is $60,892 with a poverty rate of 13.7%.The median age in Onalaska is 28 years: 26.5 years for males, and 52.7 years for females.

Demographics

The racial composition of Onalaska includes 89.5% White, 7.15% other race, and smaller percentages for Native American, Two or more races and multiracial populations.

Population by Race

Race	Population	Percentage (of total)
White	588	89.5%
Other race	47	7.15%
Native American	16	2.44%
Two or more races	6	0.91%

Onalaska Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Onalaska's average per capita income is $0. Household income levels show a median of $0. The poverty rate stands at 13.7%.

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
Non Families	$18,830	$23,109
Households	-	$60,892
Families	-	$73,424
Married Families	-	-

$0

Average Income

$0

Median Household Income

13.7%

Poverty Rate