ZIP code 49878: Masonville, MI
ZIP code 49878 is in Rapid River (9.4% of residents), in Delta County (95%) and Alger County (5.5%), Michigan. 91% of its residents live outside city limits. It is in Michigan's 1st congressional district. Its state senate district is State Senate District 38; its state house districts are State House District 108 (95%) and State House District 109 (5.5%).
See it on the mapAll of Michigan
City and county
| City or town | Share of ZIP residents |
|---|---|
| Rapid River | 9.4% |
| County | Share of ZIP residents |
|---|---|
| Delta County | 95% |
| Alger County | 5.5% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| Masonville township | 46% |
| Ensign township | 21% |
| Nahma township | 9.3% |
| Bay de Noc township | 8.4% |
| Baldwin township | 5.7% |
| Mathias township | 5.5% |
| Brampton township | 2.2% |
| Maple Ridge township | 1.5% |
| Garden township | 0.4% |
Congressional district
| Congressional district | Share of ZIP residents |
|---|---|
| Michigan's 1st congressional district (MI-01) | 100% |
Elected officials
| Office | Member | Contact | Share of residents |
|---|---|---|---|
| U.S. Representative (MI-01) | Jack Bergman (R) | 202-225-4735 | 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 38) | Ed McBroom (R) | 100% | |
| State Representative (State House District 108) | Dave Prestin (R) | 95% | |
| State Representative (State House District 109) | Karl Bohnak (R) | 5.5% |
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
- Rapid River laws: search for the Rapid River, Michigan code of ordinances
- Delta County website: http://www.deltacountymi.org
- Delta County laws: search for the Delta County, Michigan code of ordinances
- Alger County website: http://www.algercounty.com
- Alger County laws: search for the Alger County, Michigan code of ordinances
State legislative districts
| State senate district | Share of ZIP residents |
|---|---|
| State Senate District 38 | 100% |
| State house district | Share of ZIP residents |
|---|---|
| State House District 108 | 95% |
| State House District 109 | 5.5% |
Voting precincts
9 voting precincts overlap ZIP 49878. 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:49878")
ZIP 49878 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.