ZIP code 48118: Chelsea, MI
ZIP code 48118 is in Chelsea (41% of residents), in Washtenaw County, Michigan. 59% of its residents live outside city limits. It is in Michigan's 6th congressional district. Its state senate district is State Senate District 14; its state house districts are State House District 46 (64%), State House District 48 (24%) and State House District 47 (13%).
See it on the mapAll of Michigan
City and county
| City or town | Share of ZIP residents |
|---|---|
| Chelsea | 41% |
| County | Share of ZIP residents |
|---|---|
| Washtenaw County | 100% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| Chelsea city | 41% |
| Sylvan township | 23% |
| Lyndon township | 14% |
| Lima township | 11% |
| Dexter township | 9.4% |
| Freedom township | 1.5% |
| Sharon township | 0.7% |
Congressional district
| Congressional district | Share of ZIP residents |
|---|---|
| Michigan's 6th congressional district (MI-06) | 100% |
Elected officials
| Office | Member | Contact | Share of residents |
|---|---|---|---|
| Mayor | Kate Henson | 734-475-1771 | 41% |
| U.S. Representative (MI-06) | Debbie Dingell (D) | 202-225-4071 | 100% |
| 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 14) | Sue Shink (Democratic) | 100% | |
| State Representative (State House District 46) | Kathy Schmaltz (R) | 64% | |
| State Representative (State House District 48) | Jennifer Conlin (Democratic) | 24% | |
| State Representative (State House District 47) | Carrie Rheingans (Democratic) | 13% |
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: Mayors: Open States (public domain); State legislators: Open States (public domain); Members of Congress: the @unitedstates project, congress-legislators (CC0).
Local government
- Chelsea website: https://www.city-chelsea.org/
- Chelsea laws: search for the Chelsea, 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 14 | 100% |
| State house district | Share of ZIP residents |
|---|---|
| State House District 46 | 64% |
| State House District 48 | 24% |
| State House District 47 | 13% |
Voting precincts
8 voting precincts overlap ZIP 48118. 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:48118")
ZIP 48118 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.