Boundary Atlas

ZIP code 49331: Lowell, MI

ZIP code 49331 is in Lowell (23% of residents), in Kent County (87%) and Ionia County (13%), Michigan. 77% of its residents live outside city limits. It is in Michigan's 2nd congressional district (99%) and Michigan's 3rd congressional district (0.5%). Its state senate districts are State Senate District 18 (91%), State Senate District 33 (8.8%) and State Senate District 30 (0.5%); its state house districts are State House District 78 (68%), State House District 90 (31%) and State House District 81 (0.5%).

18,023residents (2020 Census)
91.5 sq miland area
2cities and towns
2congressional districts
11voting precincts

See it on the mapAll of Michigan

City and county

City or townShare of ZIP residents
Lowell23%
Forest Hills0.5%

CountyShare of ZIP residents
Kent County87%
Ionia County13%

Town or county subdivisionShare of ZIP residents
Lowell charter township32%
Vergennes township26%
Lowell city23%
Boston township9.9%
Grattan township5.5%
Keene township3.3%
Ada township0.5%

Congressional districts

Congressional districtShare of ZIP residents
Michigan's 2nd congressional district (MI-02)99%
Michigan's 3rd congressional district (MI-03)0.5%

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 1891%
State Senate District 338.8%
State Senate District 300.5%

State house districtShare of ZIP residents
State House District 7868%
State House District 9031%
State House District 810.5%

Voting precincts

11 voting precincts overlap ZIP 49331. 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:49331")

ZIP 49331 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.