Boundary Atlas

ZIP code 48390: Walled Lake, MI

ZIP code 48390 is in Walled Lake (30% of residents) and Wolverine Lake (19%), in Oakland County, Michigan. 51% of its residents live outside city limits. It is in Michigan's 11th congressional district. Its state senate district is State Senate District 13; its state house districts are State House District 49 (44%), State House District 20 (28%) and State House District 51 (28%).

24,273residents (2020 Census)
12.5 sq miland area
2cities and towns
1congressional district
11voting precincts

See it on the mapAll of Michigan

City and county

City or townShare of ZIP residents
Walled Lake30%
Wolverine Lake19%

CountyShare of ZIP residents
Oakland County100%

Town or county subdivisionShare of ZIP residents
Commerce charter township70%
Walled Lake city30%

Congressional district

Congressional districtShare of ZIP residents
Michigan's 11th congressional district (MI-11)100%

Elected officials

OfficeMemberContactShare of residents
U.S. Representative (MI-11)Haley M. Stevens (D)202-225-8171100%
U.S. SenatorElissa Slotkin (D)202-224-4822statewide
U.S. SenatorGary C. Peters (D)202-224-6221 · contact formstatewide
State Senator (State Senate District 13)Rosemary Bayer (Democratic)100%
State Representative (State House District 49)Ann Bollin (R)44%
State Representative (State House District 20)Noah Arbit (Democratic)28%
State Representative (State House District 51)Matt Maddock (R)28%

Elected under MI's previous legislative map; the district's lines changed for 2026.

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 13100%

State house districtShare of ZIP residents
State House District 4944%
State House District 2028%
State House District 5128%

Voting precincts

11 voting precincts overlap ZIP 48390. 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 48390 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.