Onalaska Population 2026
Onalaska has a population of 18,468, making it the #2582 biggest city in 🇺🇸 United States, located in Wisconsin. It is about 477× smaller than New York City, the country's biggest city.
Population (city proper)
18,468
Rank in United States
#2582
Coordinates
43.88°N, 91.24°W
~216 m elevation · America/Chicago
Distance to capital (Washington)
1,306 km
811 miles, straight line
Other big cities in Wisconsin
Cities near Onalaska
- North La Crosse50,470 people · ~4 km away
- La Crosse52,306 people · ~9 km away
- Winona27,094 people · ~37 km away
- Rochester112,225 people · ~100 km away
- Eau Claire67,778 people · ~105 km away
- Marshfield18,620 people · ~122 km away
FAQ
What is the population of Onalaska?
Onalaska has a population of 18,468 (city proper, latest official figure via GeoNames), making it the #2582 biggest city in United States.
What state is Onalaska in?
Onalaska is located in Wisconsin, United States.
Is Onalaska the capital of United States?
No, the capital of United States is Washington D.C., about 1,306 km away.
Sources & notes
Population refers to the city proper (municipal boundaries), not the metropolitan area. Source: GeoNames (CC BY 4.0), retrieved 2026-07-07. Country data: UN World Population Prospects 2024.
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