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, Black or African American, Asian, Native Hawaiian or Pacific Islander and multiracial populations.

Population by Race

White

Other race

Native American

Two or more races

Black or African American

Asian

Native Hawaiian or Pacific Islander

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%
Black or African American	0	0%
Asian	0	0%
Native Hawaiian or Pacific Islander	0	0%

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