Onalaska, Wisconsin

Onalaska population, 2020 to 2024

Onalaska added 1,031 residents from July 2020 to July 2024, a change of +5.5%. In the latest year it moved by +294. Among 157 Wisconsin places of 5,000 or more, that growth ranks 31st; the median place changed by +0.8%. The median place of 5,000+ in Wisconsin has 12,527 people, so Onalaska is 1.6 times that size.

Onalaska covers 10.61 square miles of land and 0.60 of water, for 1,875 people per square mile of land. The median Wisconsin place of 5,000+ has 1,583, so Onalaska is denser than the typical town.

What county Onalaska is in

All of Onalaska's residents live in La Crosse County, which had 121,060 residents in 2024. Onalaska holds 16.4% of the county's population. The shaded shape is on the map above; dots mark the eight nearest places.

ZIP codes in Onalaska

1 ZIP Code Tabulation Area (ZCTA) overlaps Onalaska by at least 10% of the ZCTA's or the city's land: 54650. ZCTAs are Census approximations of USPS ZIP code delivery areas. The list comes from the 2020 ZCTA to place relationship file, so a city that annexed land after 2020 may reach into ZIP codes not listed here.

Where Onalaska is

The Census internal point of Onalaska is at 43.889700, -91.204400. Madison, the capital, is 107.2 miles ESE in a straight line. The nearest larger place is La Crosse, WI (51,049 people), 4.6 miles away. The nearest city of 100,000 or more is Rochester, MN, 63.9 miles away.

Daylight in Onalaska

At 43.89° N, Onalaska gets about 15 h 28 min of daylight around the June solstice and 8 h 54 min around the December solstice, a swing of 6 h 34 min. Figures are sunrise to sunset from the SunCalc model for June 21 and December 21, 2026.

Places near Onalaska

The eight nearest incorporated places of 1,000+ in Wisconsin, measured between internal points. The closest is La Crosse, 4.6 miles away, with 51,049 people.