Boundary Atlas

ZIP code 48331: Farmington Hills, MI

ZIP code 48331 is in Farmington Hills, in Oakland County, Michigan. It is in Michigan's 11th congressional district. Its state senate district is State Senate District 8; its state house districts are State House District 19 (89%), State House District 21 (8.9%) and State House District 18 (2.1%).

22,091residents (2020 Census)
9.3 sq miland area
1cities and towns
1congressional district
9voting precincts

See it on the mapAll of Michigan

City and county

City or townShare of ZIP residents
Farmington Hills100%

CountyShare of ZIP residents
Oakland County100%

Town or county subdivisionShare of ZIP residents
Farmington Hills city100%

Congressional district

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

State legislative districts

State senate districtShare of ZIP residents
State Senate District 8100%

State house districtShare of ZIP residents
State House District 1989%
State House District 218.9%
State House District 182.1%

Voting precincts

9 voting precincts overlap ZIP 48331. 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:48331")

ZIP 48331 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.