Boundary Atlas

ZIP code 49010: Allegan, MI

ZIP code 49010 is in Allegan (29% of residents), in Allegan County (100%) and Van Buren County (0.3%), Michigan. 71% of its residents live outside city limits. It is in Michigan's 4th congressional district. Its state senate districts are State Senate District 20 (85%) and State Senate District 18 (15%); its state house districts are State House District 43 (80%) and State House District 39 (20%).

18,183residents (2020 Census)
156.6 sq miland area
1cities and towns
1congressional district
11voting precincts

See it on the mapAll of Michigan

City and county

City or townShare of ZIP residents
Allegan29%

CountyShare of ZIP residents
Allegan County100%
Van Buren County0.3%

Town or county subdivisionShare of ZIP residents
Allegan city29%
Allegan township26%
Valley township12%
Trowbridge township11%
Cheshire township8.4%
Monterey township6.3%
Watson township4.3%
Heath township3.4%
Pine Grove township0.3%
Hopkins township<0.1%

Congressional district

Congressional districtShare of ZIP residents
Michigan's 4th congressional district (MI-04)100%

Elected officials

OfficeMemberContactShare of residents
U.S. Representative (MI-04)Bill Huizenga (R)202-225-4401100%
U.S. SenatorElissa Slotkin (D)202-224-4822statewide
U.S. SenatorGary C. Peters (D)202-224-6221 · contact formstatewide
State Senator (State Senate District 20)Aric Nesbitt (R)85%
State Senator (State Senate District 18)Thomas Albert (R)15%
State Representative (State House District 43)Rachelle Smit (R)80%
State Representative (State House District 39)Pauline Wendzel (R)20%

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

State legislative districts

State senate districtShare of ZIP residents
State Senate District 2085%
State Senate District 1815%

State house districtShare of ZIP residents
State House District 4380%
State House District 3920%

Voting precincts

11 voting precincts overlap ZIP 49010. 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:49010")

ZIP 49010 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.