Fond du Lac, Wisconsin

3 ZIP codes · Central time

ZIP codes (largest first)

54935 · 41,61354937 · 21,68754936 (PO box)
Population44,494
StateWisconsin
CountyFond du Lac County
Time zoneCentral
Land area19.24 sq mi

Area codes in this area

274920

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

Find the ZIP+4 for an address in Fond du Lac

Addresses are checked through our secure proxy. Bot checks use Cloudflare Turnstile. Each device can run 5 live checks per day; repeats of the same address are free.

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