ZIP code 49270: Petersburg, MI
ZIP code 49270 is in Petersburg (20% of residents), in Monroe County, Michigan. 80% of its residents live outside city limits. It is in Michigan's 5th congressional district. Its state senate district is State Senate District 16; its state house districts are State House District 30 (95%) and State House District 31 (4.8%).
See it on the mapAll of Michigan
City and county
| City or town | Share of ZIP residents |
|---|---|
| Petersburg | 20% |
| County | Share of ZIP residents |
|---|---|
| Monroe County | 100% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| Summerfield township | 48% |
| Ida township | 22% |
| Petersburg city | 20% |
| Dundee township | 4.8% |
| Whiteford township | 4.0% |
| Bedford township | 0.7% |
Congressional district
| Congressional district | Share of ZIP residents |
|---|---|
| Michigan's 5th congressional district (MI-05) | 100% |
Elected officials
| Office | Member | Contact | Share of residents |
|---|---|---|---|
| U.S. Representative (MI-05) | Tim Walberg (R) | 202-225-6276 | 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 16) | Joe Bellino (R) | 100% | |
| State Representative (State House District 30) | Will Bruck (R) | 95% | |
| State Representative (State House District 31) | Reggie Miller (Democratic) | 4.8% |
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
- Petersburg website: https://petersburgmi.gov
- Petersburg laws: search for the Petersburg, Michigan code of ordinances
- Monroe County website: http://www.co.monroe.mi.us
- Monroe County laws: search for the Monroe County, Michigan code of ordinances
State legislative districts
| State senate district | Share of ZIP residents |
|---|---|
| State Senate District 16 | 100% |
| State house district | Share of ZIP residents |
|---|---|
| State House District 30 | 95% |
| State House District 31 | 4.8% |
Voting precincts
8 voting precincts overlap ZIP 49270. 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:49270")
ZIP 49270 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.