ZIP code 53151: New Berlin, WI

ZIP code 53151 is in New Berlin, in Waukesha County, Wisconsin. It is in Wisconsin's 5th congressional district. Its state senate district is State Senate District 28; its state house district is Assembly District 83.

32,535residents (2020 Census)

17.5 sq miland area

1cities and towns

1congressional district

19voting precincts

See it on the map All of Wisconsin

City and county

City or town	Share of ZIP residents
New Berlin	100%

County	Share of ZIP residents
Waukesha County	100%

Town or county subdivision	Share of ZIP residents
New Berlin city	100%

Congressional district

Congressional district	Share of ZIP residents
Wisconsin's 5th congressional district (WI-05)	100%

Elected officials

Office	Member	Contact	Share of residents
U.S. Representative (WI-05)	Scott Fitzgerald (R)	202-225-5101	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 28)	Julian Bradley (R)		100%
Assembly Member (Assembly District 83)	Dave Maxey (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

New Berlin website: https://www.newberlin.org/
New Berlin laws: search for the New Berlin, Wisconsin code of ordinances
Waukesha County website: http://www.waukeshacounty.gov
Waukesha County laws: search for the Waukesha County, Wisconsin code of ordinances

State legislative districts

State senate district	Share of ZIP residents
State Senate District 28	100%

State house district	Share of ZIP residents
Assembly District 83	100%

Voting precincts

19 voting precincts overlap ZIP 53151. 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://boundarymcp.com/mcp to Claude, ChatGPT, Cursor or Codex (free, no key; how), then:

related_geographies(id="us:zcta:53151")

ZIP 53151 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.