ZIP code 54025: Somerset, WI

ZIP code 54025 is in Somerset (41% of residents), in St. Croix County, Wisconsin. 59% of its residents live outside city limits. It is in Wisconsin's 7th congressional district. Its state senate district is State Senate District 10; its state house districts are Assembly District 28 (97%) and Assembly District 30 (3.3%).

7,336residents (2020 Census)

50.1 sq miland area

1cities and towns

1congressional district

16voting precincts

See it on the map All of Wisconsin

City and county

City or town	Share of ZIP residents
Somerset	41%

County	Share of ZIP residents
St. Croix County	100%

Town or county subdivision	Share of ZIP residents
Somerset town	43%
Somerset village	41%
Star Prairie town	13%
St. Joseph town	3.3%

Congressional district

Congressional district	Share of ZIP residents
Wisconsin's 7th congressional district (WI-07)	100%

Elected officials

Office	Member	Contact	Share of residents
U.S. Representative (WI-07)	Thomas P. Tiffany (R)	202-225-3365	100%
U.S. Senator	Ron Johnson (R)	202-224-5323 · contact form	statewide
U.S. Senator	Tammy Baldwin (D)	202-224-5653 · contact form	statewide
State Senator (State Senate District 10)	Rob Stafsholt (R)		100%
Assembly Member (Assembly District 28)	Rob Kreibich (R)		97%
Assembly Member (Assembly District 30)	Shannon Zimmerman (R)		3.3%

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

Somerset laws: search for the Somerset, Wisconsin code of ordinances
St. Croix County website: https://www.sccwi.gov/
St. Croix County laws: search for the St. Croix County, Wisconsin code of ordinances

State legislative districts

State senate district	Share of ZIP residents
State Senate District 10	100%

State house district	Share of ZIP residents
Assembly District 28	97%
Assembly District 30	3.3%

Voting precincts

16 voting precincts overlap ZIP 54025. Map them, with each precinct's share of the ZIP's residents.

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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:

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ZIP 54025 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.