Boundary Atlas

ZIP code 54947: Winchester, WI

ZIP code 54947 is in Winchester (24% of residents), in Winnebago County, Wisconsin. 76% of its residents live outside city limits. It is in Wisconsin's 8th congressional district (78%) and Wisconsin's 6th congressional district (22%). Its state senate district is State Senate District 19; its state house district is Assembly District 55.

2,667residents (2020 Census)
46.5 sq miland area
1cities and towns
2congressional districts
10voting precincts

See it on the mapAll of Wisconsin

City and county

City or townShare of ZIP residents
Winchester24%

CountyShare of ZIP residents
Winnebago County100%

Town or county subdivisionShare of ZIP residents
Winchester town64%
Clayton town26%
Wolf River town10%

Congressional districts

Congressional districtShare of ZIP residents
Wisconsin's 8th congressional district (WI-08)78%
Wisconsin's 6th congressional district (WI-06)22%

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)202-225-566578%
U.S. Representative (WI-06)Glenn Grothman (R)202-225-247622%
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 55)Gus Gustafson (R)100%

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 55100%

Voting precincts

10 voting precincts overlap ZIP 54947. 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:54947")

ZIP 54947 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.