Boundary Atlas

ZIP code 49428: Jenison, MI

ZIP code 49428 is in Jenison (61% of residents), in Ottawa County, Michigan. 39% of its residents live outside city limits. It is in Michigan's 4th congressional district (93%) and Michigan's 3rd congressional district (7.4%). Its state senate district is State Senate District 31; its state house district is State House District 85.

27,162residents (2020 Census)
16.1 sq miland area
1cities and towns
2congressional districts
12voting precincts

See it on the mapAll of Michigan

City and county

City or townShare of ZIP residents
Jenison61%

CountyShare of ZIP residents
Ottawa County100%

Town or county subdivisionShare of ZIP residents
Georgetown charter township100%

Congressional districts

Congressional districtShare of ZIP residents
Michigan's 4th congressional district (MI-04)93%
Michigan's 3rd congressional district (MI-03)7.4%

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.

Elected officials

OfficeMemberContactShare of residents
U.S. Representative (MI-04)Bill Huizenga (R)202-225-440193%
U.S. Representative (MI-03)Hillary J. Scholten (D)202-225-38317.4%
U.S. SenatorElissa Slotkin (D)202-224-4822statewide
U.S. SenatorGary C. Peters (D)202-224-6221 · contact formstatewide
State Senator (State Senate District 31)Roger Victory (R)100%
State Representative (State House District 85)Brad Slagh (R)100%

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 31100%

State house districtShare of ZIP residents
State House District 85100%

Voting precincts

12 voting precincts overlap ZIP 49428. 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:49428")

ZIP 49428 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.