Boundary Atlas

ZIP code 53527: Cottage Grove, WI

ZIP code 53527 is in Cottage Grove (66% of residents), in Dane County, Wisconsin. 34% of its residents live outside city limits. It is in Wisconsin's 2nd congressional district. Its state senate district is State Senate District 16; its state house districts are Assembly District 46 (94%), Assembly District 48 (3.3%) and Assembly District 47 (3.0%).

10,994residents (2020 Census)
35.8 sq miland area
2cities and towns
1congressional district
19voting precincts

See it on the mapAll of Wisconsin

City and county

City or townShare of ZIP residents
Cottage Grove66%
Madison<0.1%

CountyShare of ZIP residents
Dane County100%

Town or county subdivisionShare of ZIP residents
Cottage Grove village66%
Cottage Grove town27%
Sun Prairie town3.3%
Pleasant Springs town3.0%
Madison city<0.1%

Congressional district

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

State legislative districts

State senate districtShare of ZIP residents
State Senate District 16100%

State house districtShare of ZIP residents
Assembly District 4694%
Assembly District 483.3%
Assembly District 473.0%

Voting precincts

19 voting precincts overlap ZIP 53527. 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:53527")

ZIP 53527 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.