ZIP code 49033: Newton, MI
ZIP code 49033 is in Marshall (1.6% of residents), in Calhoun County, Michigan. 98% of its residents live outside city limits. It is in Michigan's 5th congressional district (80%) and Michigan's 4th congressional district (20%). Its state senate district is State Senate District 18; its state house district is State House District 45.
See it on the mapAll of Michigan
City and county
| City or town | Share of ZIP residents |
|---|---|
| Marshall | 1.6% |
| County | Share of ZIP residents |
|---|---|
| Calhoun County | 100% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| Newton township | 57% |
| Emmett charter township | 20% |
| Marshall township | 16% |
| Fredonia township | 6.2% |
| Marshall city | 1.6% |
Congressional districts
| Congressional district | Share of ZIP residents |
|---|---|
| Michigan's 5th congressional district (MI-05) | 80% |
| Michigan's 4th congressional district (MI-04) | 20% |
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 district | Share of ZIP residents |
|---|---|
| State Senate District 18 | 100% |
| State house district | Share of ZIP residents |
|---|---|
| State House District 45 | 100% |
Voting precincts
6 voting precincts overlap ZIP 49033. 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:49033")
ZIP 49033 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.