Boundary Atlas

ZIP code 53128: Bloomfield, WI

ZIP code 53128 is in Bloomfield (53% of residents), Genoa City (33%) and Powers Lake (13%), in Walworth County (86%) and Kenosha County (14%), Wisconsin. It is in Wisconsin's 1st congressional district. Its state senate district is State Senate District 11; its state house district is Assembly District 32.

9,064residents (2020 Census)
25.3 sq miland area
4cities and towns
1congressional district
18voting precincts

See it on the mapAll of Wisconsin

City and county

City or townShare of ZIP residents
Bloomfield53%
Genoa City33%
Powers Lake13%
Twin Lakes0.4%

CountyShare of ZIP residents
Walworth County86%
Kenosha County14%

Town or county subdivisionShare of ZIP residents
Bloomfield village53%
Genoa City village33%
Randall town12%
Wheatland town1.2%
Bloomfield town0.7%
Twin Lakes village0.4%
Genoa City village<0.1%

Congressional district

Congressional districtShare of ZIP residents
Wisconsin's 1st congressional district (WI-01)100%

Elected officials

OfficeMemberContactShare of residents
U.S. Representative (WI-01)Bryan Steil (R)202-225-3031100%
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 11)Steve Nass (R)100%
Assembly Member (Assembly District 32)Amanda Nedweski (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 11100%

State house districtShare of ZIP residents
Assembly District 32100%

Voting precincts

18 voting precincts overlap ZIP 53128. 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 53128 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.