Boundary Atlas

ZIP code 53520: Brodhead, WI

ZIP code 53520 is in Brodhead (49% of residents), in Green County (82%) and Rock County (18%), Wisconsin. 51% of its residents live outside city limits. It is in Wisconsin's 2nd congressional district. Its state senate districts are State Senate District 17 (83%) and State Senate District 15 (17%); its state house districts are Assembly District 50 (83%) and Assembly District 45 (17%).

6,684residents (2020 Census)
119.9 sq miland area
1cities and towns
1congressional district
19voting precincts

See it on the mapAll of Wisconsin

City and county

City or townShare of ZIP residents
Brodhead49%

CountyShare of ZIP residents
Green County82%
Rock County18%

Town or county subdivisionShare of ZIP residents
Brodhead city48%
Decatur town25%
Spring Grove town9.1%
Avon town8.1%
Spring Valley town6.3%
Magnolia town2.0%
Brodhead city1.3%
Albany town0.3%
Newark town0.2%
Sylvester town<0.1%

Congressional district

Congressional districtShare of ZIP residents
Wisconsin's 2nd congressional district (WI-02)100%

Elected officials

OfficeMemberContactShare of residents
U.S. Representative (WI-02)Mark Pocan (D)202-225-2906100%
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 17)Howard Marklein (R)83%
State Senator (State Senate District 15)Mark Spreitzer (Democratic)17%
Assembly Member (Assembly District 50)Jenna Jacobson (Democratic)83%
Assembly Member (Assembly District 45)Clint Anderson (Democratic)17%

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 1783%
State Senate District 1517%

State house districtShare of ZIP residents
Assembly District 5083%
Assembly District 4517%

Voting precincts

19 voting precincts overlap ZIP 53520. 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:53520")

ZIP 53520 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.