ZIP code 49128: Three Oaks, MI
ZIP code 49128 is in Three Oaks (40% of residents) and Shorewood-Tower Hills-Harbert (1.8%), in Berrien County, Michigan. 58% of its residents live outside city limits. It is in Michigan's 5th congressional district. Its state senate district is State Senate District 17; its state house districts are State House District 37 (76%) and State House District 38 (24%).
See it on the mapAll of Michigan
City and county
| City or town | Share of ZIP residents |
|---|---|
| Three Oaks | 40% |
| Shorewood-Tower Hills-Harbert | 1.8% |
| New Troy | 0.5% |
| County | Share of ZIP residents |
|---|---|
| Berrien County | 100% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| Three Oaks township | 67% |
| Chikaming township | 24% |
| Weesaw township | 8.6% |
| Galien township | 0.8% |
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 17) | Jonathan Lindsey (R) | 100% | |
| State Representative (State House District 37) | Brad Paquette (R) | 76% | |
| State Representative (State House District 38) | Joey Andrews (Democratic) | 24% |
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
- Three Oaks laws: search for the Three Oaks, Michigan code of ordinances
- Shorewood-Tower Hills-Harbert laws: search for the Shorewood-Tower Hills-Harbert, Michigan code of ordinances
- Berrien County website: https://www.berriencounty.org
- Berrien County laws: search for the Berrien County, Michigan code of ordinances
State legislative districts
| State senate district | Share of ZIP residents |
|---|---|
| State Senate District 17 | 100% |
| State house district | Share of ZIP residents |
|---|---|
| State House District 37 | 76% |
| State House District 38 | 24% |
Voting precincts
4 voting precincts overlap ZIP 49128. 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:49128")
ZIP 49128 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.