ZIP code 48137: Unadilla, MI
ZIP code 48137 is in Livingston County (68%) and Washtenaw County (32%), Michigan, outside any city or Census-designated place. It is in Michigan's 7th congressional district (68%) and Michigan's 6th congressional district (32%). Its state senate districts are State Senate District 22 (68%) and State Senate District 14 (32%); its state house districts are State House District 50 (68%) and State House District 48 (32%).
See it on the mapAll of Michigan
City and county
Outside any city or Census-designated place.
| County | Share of ZIP residents |
|---|---|
| Livingston County | 68% |
| Washtenaw County | 32% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| Unadilla township | 46% |
| Iosco township | 22% |
| Dexter township | 19% |
| Lyndon township | 13% |
Congressional districts
| Congressional district | Share of ZIP residents |
|---|---|
| Michigan's 7th congressional district (MI-07) | 68% |
| Michigan's 6th congressional district (MI-06) | 32% |
This ZIP is split between districts. A mailing address in it could be in either; the map or locate_point gives the district for an exact address.
Elected officials
| Office | Member | Contact | Share of residents |
|---|---|---|---|
| U.S. Representative (MI-07) | Tom Barrett (R) | 202-225-4872 | 68% |
| U.S. Representative (MI-06) | Debbie Dingell (D) | 202-225-4071 | 32% |
| U.S. Senator | Elissa Slotkin (D) | 202-224-4822 | statewide |
| U.S. Senator | Gary C. Peters (D) | 202-224-6221 · contact form | statewide |
| State Senator (State Senate District 22) | Lana Theis (R) | 68% | |
| State Senator (State Senate District 14) | Sue Shink (Democratic) | 32% | |
| State Representative (State House District 50) | Jason Woolford (R) | 68% | |
| State Representative (State House District 48) | Jennifer Conlin (Democratic) | 32% |
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
- Livingston County laws: search for the Livingston County, Michigan code of ordinances
- Washtenaw County website: https://washtenaw.org
- Washtenaw County laws: search for the Washtenaw County, Michigan code of ordinances
State legislative districts
| State senate district | Share of ZIP residents |
|---|---|
| State Senate District 22 | 68% |
| State Senate District 14 | 32% |
| State house district | Share of ZIP residents |
|---|---|
| State House District 50 | 68% |
| State House District 48 | 32% |
Voting precincts
6 voting precincts overlap ZIP 48137. 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:48137")
ZIP 48137 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.