ZIP code 48837: Grand Ledge, MI
ZIP code 48837 is in Grand Ledge (41% of residents) and Wacousta (5.9%), in Eaton County (88%), Clinton County (11%) and Ionia County (1.1%), Michigan. 54% of its residents live outside city limits. It is in Michigan's 7th congressional district (99%) and Michigan's 2nd congressional district (1.1%). Its state senate districts are State Senate District 21 (88%), State Senate District 28 (11%) and State Senate District 33 (1.1%); its state house districts are State House District 77 (53%), State House District 76 (45%) and State House District 78 (2.2%).
See it on the mapAll of Michigan
City and county
| City or town | Share of ZIP residents |
|---|---|
| Grand Ledge | 41% |
| Wacousta | 5.9% |
| County | Share of ZIP residents |
|---|---|
| Eaton County | 88% |
| Clinton County | 11% |
| Ionia County | 1.1% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| Grand Ledge city | 41% |
| Delta charter township | 25% |
| Oneida charter township | 21% |
| Watertown charter township | 8.9% |
| Eagle township | 1.9% |
| Roxand township | 1.2% |
| Danby township | 1.1% |
| Benton township | 0.8% |
| Windsor charter township | 0.2% |
Congressional districts
| Congressional district | Share of ZIP residents |
|---|---|
| Michigan's 7th congressional district (MI-07) | 99% |
| Michigan's 2nd congressional district (MI-02) | 1.1% |
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 21 | 88% |
| State Senate District 28 | 11% |
| State Senate District 33 | 1.1% |
| State house district | Share of ZIP residents |
|---|---|
| State House District 77 | 53% |
| State House District 76 | 45% |
| State House District 78 | 2.2% |
Voting precincts
14 voting precincts overlap ZIP 48837. 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:48837")
ZIP 48837 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.