Michigan's 12th congressional district (MI-12)
Michigan's 12th congressional district (MI-12) covers parts or all of Wayne County and Oakland County, and 29 ZIP codes (23 wholly inside it). Its 2020 population was 775,247. This is the map in force for the November 3, 2026 election.
Who represents MI-12
| Office | Member | Contact |
|---|---|---|
| U.S. Representative (MI-12) | Rashida Tlaib (D) | 202-225-5126 |
| U.S. Senator | Elissa Slotkin (D) | 202-224-4822 |
| U.S. Senator | Gary C. Peters (D) | 202-224-6221 · contact form |
Officials serving now (members of Congress until January 3, 2027). Sources: Members of Congress: the @unitedstates project, congress-legislators (CC0).
Counties
| County | Share of the county's residents in MI-12 |
|---|---|
| Wayne County | 38% |
| Oakland County | 7.5% |
ZIP codes
Percentages mark ZIPs only partly in MI-12: the share of that ZIP's residents inside it.
- 48025 (100%)
- 48033
- 48034
- 48075
- 48076
- 48101 (<0.1%)
- 48120
- 48124
- 48125 (8.5%)
- 48126
- 48127
- 48128
- 48135
- 48141
- 48150
- 48152
- 48154
- 48185
- 48186
- 48204 (19%)
- 48219
- 48221 (48%)
- 48223
- 48227
- 48228
- 48235
- 48238 (22%)
- 48239
- 48240
Towns
Dearborn city, Garden City city, Inkster city, Lathrup Village city, Livonia city, Redford charter township, Southfield city, Southfield township, Westland city, Dearborn Heights city and Detroit city.
Get this in your AI agent
Your agent can draw every precinct in MI-12, or list them with population shares (related_geographies). Add https://boundarymcp.com/mcp to Claude, ChatGPT, Cursor or Codex (free, no key; how), then:
get_boundaries(id="us:congressional_district:2612", children_level="precinct", include_districts=True)