Onalaska, Wisconsin

1 ZIP code · Central time

ZIP codes (largest first)

54650 · 25,304
Population19,348
StateWisconsin
CountyLa Crosse County
Time zoneCentral
Land area10.61 sq mi

Area codes in this area

353608

These are the area codes that most often serve Onalaska (including overlays). The exact area code depends on the phone number — landlines, mobiles and overlays can differ even on the same street.

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Population: U.S. Census Bureau, ACS 5-year estimates, 2024.