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 2026 population of 665. Onalaska is currently growing at a rate of 0.3% annually and its population has decreased by 0% since the most recent census, which recorded a population of 0 in 2020.

The median age in Onalaska is 38.4 years: 32.3 years for males, and 69.4 years for females. For every 100 females there are 138.9 males.

665
Total Population
415
Density (mi²)
2 0.3%
Growth

Onalaska Population

Onalaska Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
202666520.3%
202566330.45%

Median Age

Overall: 38.4 years
Female: 69.4 years
Male: 32.3 years

Onalaska Adults

There are 700 adults, (278 of whom are seniors) in Onalaska.

Sex Ratio

Female: 355 (41.9%)
Male: 493 (58.1%)

Demographics

The racial composition of Onalaska includes 90.8% White, 5.78% other race, and smaller percentages for Native American, Two or more races and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White77090.8%
Other race495.78%
Native American202.36%
Two or more races91.06%
Race
Population ↓
Percentage (of total)
Other race495.78%
Race
Population ↓
Percentage (of total)
White77090.8%
Native American202.36%
Two or more races91.06%

Onalaska Marital Status

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)