Boundary Atlas

ZIP code 48838: Greenville, MI

ZIP code 48838 is in Greenville (47% of residents), in Montcalm County (85%), Kent County (15%) and Ionia County (0.3%), Michigan. 53% of its residents live outside city limits. It is in Michigan's 2nd congressional district. Its state senate district is State Senate District 33; its state house districts are State House District 91 (100%) and State House District 90 (0.2%).

18,801residents (2020 Census)
93.1 sq miland area
1cities and towns
1congressional district
14voting precincts

See it on the mapAll of Michigan

City and county

City or townShare of ZIP residents
Greenville47%

CountyShare of ZIP residents
Montcalm County85%
Kent County15%
Ionia County0.3%

Town or county subdivisionShare of ZIP residents
Greenville city47%
Eureka township22%
Oakfield township15%
Montcalm township13%
Fairplain township2.6%
Otisco township0.3%
Grattan township0.2%
Pine township0.2%

Congressional district

Congressional districtShare of ZIP residents
Michigan's 2nd congressional district (MI-02)100%

State legislative districts

State senate districtShare of ZIP residents
State Senate District 33100%

State house districtShare of ZIP residents
State House District 91100%
State House District 900.2%

Voting precincts

14 voting precincts overlap ZIP 48838. Map them, with each precinct's share of the ZIP's residents.

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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:48838")

ZIP 48838 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.