Boundary Atlas

ZIP code 49080: Plainwell, MI

ZIP code 49080 is in Plainwell (24% of residents), in Allegan County (72%), Barry County (18%) and Kalamazoo County (9.9%), Michigan. 76% of its residents live outside city limits. It is in Michigan's 4th congressional district (82%) and Michigan's 2nd congressional district (18%). Its state senate districts are State Senate District 18 (90%) and State Senate District 19 (9.9%); its state house districts are State House District 42 (81%) and State House District 43 (19%).

15,994residents (2020 Census)
77.4 sq miland area
1cities and towns
2congressional districts
11voting precincts

See it on the mapAll of Michigan

City and county

City or townShare of ZIP residents
Plainwell24%

CountyShare of ZIP residents
Allegan County72%
Barry County18%
Kalamazoo County9.9%

Town or county subdivisionShare of ZIP residents
Gun Plain township36%
Plainwell city24%
Prairieville township13%
Otsego township12%
Cooper charter township8.4%
Orangeville township4.7%
Alamo township1.5%
Martin township0.7%

Congressional districts

Congressional districtShare of ZIP residents
Michigan's 4th congressional district (MI-04)82%
Michigan's 2nd congressional district (MI-02)18%

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 districtShare of ZIP residents
State Senate District 1890%
State Senate District 199.9%

State house districtShare of ZIP residents
State House District 4281%
State House District 4319%

Voting precincts

11 voting precincts overlap ZIP 49080. 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:49080")

ZIP 49080 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.