Boundary Atlas

ZIP code 54940: Wolf River, WI

ZIP code 54940 is in Fremont (16% of residents), Tustin (2.8%) and Dale (2.0%), in Waupaca County (48%), Winnebago County (23%), Waushara County (18%) and Outagamie County (11%), Wisconsin. 79% of its residents live outside city limits. It is in Wisconsin's 8th congressional district (61%) and Wisconsin's 6th congressional district (39%). Its state senate district is State Senate District 19; its state house districts are Assembly District 57 (77%) and Assembly District 55 (23%).

4,219residents (2020 Census)
90.5 sq miland area
3cities and towns
2congressional districts
14voting precincts

See it on the mapAll of Wisconsin

City and county

City or townShare of ZIP residents
Fremont16%
Tustin2.8%
Dale2.0%

CountyShare of ZIP residents
Waupaca County48%
Winnebago County23%
Waushara County18%
Outagamie County11%

Town or county subdivisionShare of ZIP residents
Wolf River town22%
Caledonia town21%
Fremont village16%
Bloomfield town16%
Fremont town11%
Dale town11%
Poy Sippi town1.3%
Winchester town1.2%

Congressional districts

Congressional districtShare of ZIP residents
Wisconsin's 8th congressional district (WI-08)61%
Wisconsin's 6th congressional district (WI-06)39%

This ZIP is split between districts. A mailing address in it could be in either; the map or locate_point gives the district for an exact address.

Elected officials

OfficeMemberContactShare of residents
U.S. Representative (WI-08)Tony Wied (R)202-225-566561%
U.S. Representative (WI-06)Glenn Grothman (R)202-225-247639%
U.S. SenatorRon Johnson (R)202-224-5323 · contact formstatewide
U.S. SenatorTammy Baldwin (D)202-224-5653 · contact formstatewide
State Senator (State Senate District 19)Rachael Cabral-Guevara (R)100%
Assembly Member (Assembly District 57)Kevin Petersen (R)77%
Assembly Member (Assembly District 55)Gus Gustafson (R)23%

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).

Local government

State legislative districts

State senate districtShare of ZIP residents
State Senate District 19100%

State house districtShare of ZIP residents
Assembly District 5777%
Assembly District 5523%

Voting precincts

14 voting precincts overlap ZIP 54940. 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:54940")

ZIP 54940 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.