ZIP code 48879: St. Johns, MI
ZIP code 48879 is in St. Johns (43% of residents), in Clinton County (99%) and Gratiot County (0.8%), Michigan. 57% of its residents live outside city limits. It is in Michigan's 7th congressional district (99%) and Michigan's 2nd congressional district (0.8%). Its state senate districts are State Senate District 28 (93%) and State Senate District 34 (6.8%); its state house districts are State House District 75 (71%), State House District 93 (24%) and State House District 77 (4.7%).
See it on the mapAll of Michigan
City and county
| City or town | Share of ZIP residents |
|---|---|
| St. Johns | 43% |
| Eureka | 1.0% |
| Maple Rapids | 0.1% |
| County | Share of ZIP residents |
|---|---|
| Clinton County | 99% |
| Gratiot County | 0.8% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| St. Johns city | 43% |
| Bingham township | 16% |
| Greenbush township | 11% |
| Essex township | 6.0% |
| Bengal township | 5.9% |
| Olive township | 5.2% |
| Riley township | 4.7% |
| Victor township | 3.5% |
| Ovid township | 3.1% |
| Duplain township | 1.1% |
| Washington township | 0.7% |
| Dallas township | 0.1% |
| Fulton township | <0.1% |
Congressional districts
| Congressional district | Share of ZIP residents |
|---|---|
| Michigan's 7th congressional district (MI-07) | 99% |
| Michigan's 2nd congressional district (MI-02) | 0.8% |
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.
State legislative districts
| State senate district | Share of ZIP residents |
|---|---|
| State Senate District 28 | 93% |
| State Senate District 34 | 6.8% |
| State house district | Share of ZIP residents |
|---|---|
| State House District 75 | 71% |
| State House District 93 | 24% |
| State House District 77 | 4.7% |
Voting precincts
14 voting precincts overlap ZIP 48879. 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:48879")
ZIP 48879 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.