ZIP code 54937 is in North Fond du Lac (25% of residents), Fond du Lac (17%) and St. Peter (4.8%), in Fond du Lac County, Wisconsin. 53% of its residents live outside city limits. It is in Wisconsin's 6th congressional district. Its state senate districts are State Senate District 20 (78%), State Senate District 9 (12%) and State Senate District 13 (10%); its state house districts are Assembly District 60 (77%), Assembly District 27 (12%), Assembly District 39 (5.1%), Assembly District 37 (5.0%) and Assembly District 59 (1.2%).
Officials serving now (members of Congress until January 3, 2027). Sources: State legislators: Open States (public domain); Members of Congress: the @unitedstates project, congress-legislators (CC0).
41 voting precincts overlap ZIP 54937.
Map them, with each precinct's share of the ZIP's residents.
Get this in your AI agent
Your agent can get these cities, counties, districts and precincts with their shares, and their GeoJSON boundaries, from Boundary Atlas. Add https://atlas-production-d344.up.railway.app/mcp to Claude, ChatGPT, Cursor or Codex (free, no key; how), then:
related_geographies(id="us:zcta:54937")
ZIP 54937 here is the Census Bureau's ZIP Code Tabulation Area, which approximates the USPS ZIP Code;
PO-box-only ZIPs have none. Districts are the maps in force for the November 3, 2026 election.