Onalaska Flag

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.

593
Total Population
370
Density (mi²)
-2 -0.34%
Growth

Onalaska Population

Onalaska Population

Data after 2023 is projected based on recent change

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

White (89.5%)

Other race (7.1%)

Native American (2.4%)

Two or more races (0.9%)

Race
Population
Percentage (of total)
White58889.5%
Other race477.15%
Native American162.44%
Two or more races60.91%

Onalaska Marital Status

OverallMalesFemales0%10%20%30%40%50%60%70%80%90%100%

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

Nearby Cities

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)