Boundary Atlas

ZIP code 53901: Portage, WI

ZIP code 53901 is in Portage (71% of residents), in Columbia County (99%) and Marquette County (0.6%), Wisconsin. 29% of its residents live outside city limits. It is in Wisconsin's 6th congressional district. Its state senate districts are State Senate District 14 (99%) and State Senate District 13 (0.6%); its state house districts are Assembly District 40 (99%) and Assembly District 39 (0.6%).

14,924residents (2020 Census)
147.3 sq miland area
2cities and towns
1congressional district
22voting precincts

See it on the mapAll of Wisconsin

City and county

City or townShare of ZIP residents
Portage71%
Briggsville0.2%

CountyShare of ZIP residents
Columbia County99%
Marquette County0.6%

Town or county subdivisionShare of ZIP residents
Portage city71%
Caledonia town7.7%
Lewiston town7.4%
Pacific town5.5%
Fort Winnebago town5.4%
Marcellon town2.1%
Douglas town0.6%
Wyocena town0.4%

Congressional district

Congressional districtShare of ZIP residents
Wisconsin's 6th congressional district (WI-06)100%

Elected officials

OfficeMemberContactShare of residents
U.S. Representative (WI-06)Glenn Grothman (R)202-225-2476100%
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 14)Sarah Keyeski (Democratic)99%
State Senator (State Senate District 13)John Jagler (R)0.6%
Assembly Member (Assembly District 40)Karen DeSanto (Democratic)99%
Assembly Member (Assembly District 39)Alex Dallman (R)0.6%

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 1499%
State Senate District 130.6%

State house districtShare of ZIP residents
Assembly District 4099%
Assembly District 390.6%

Voting precincts

22 voting precincts overlap ZIP 53901. Map them, with each precinct's share of the ZIP's residents.

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ZIP 53901 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.