ZIP code 49090: South Haven, MI
ZIP code 49090 is in South Haven (30% of residents), in Van Buren County (82%) and Allegan County (18%), Michigan. 70% of its residents live outside city limits. It is in Michigan's 4th congressional district. Its state senate district is State Senate District 20; its state house districts are State House District 38 (81%) and State House District 39 (19%).
See it on the mapAll of Michigan
City and county
| City or town | Share of ZIP residents |
|---|---|
| South Haven | 30% |
| County | Share of ZIP residents |
|---|---|
| Van Buren County | 82% |
| Allegan County | 18% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| South Haven charter township | 30% |
| South Haven city | 30% |
| Geneva township | 19% |
| Casco township | 17% |
| Covert township | 1.9% |
| Ganges township | 1.0% |
| Bangor township | 0.2% |
Congressional district
| Congressional district | Share of ZIP residents |
|---|---|
| Michigan's 4th congressional district (MI-04) | 100% |
Elected officials
| Office | Member | Contact | Share of residents |
|---|---|---|---|
| U.S. Representative (MI-04) | Bill Huizenga (R) | 202-225-4401 | 100% |
| U.S. Senator | Elissa Slotkin (D) | 202-224-4822 | statewide |
| U.S. Senator | Gary C. Peters (D) | 202-224-6221 · contact form | statewide |
| State Senator (State Senate District 20) | Aric Nesbitt (R) | 100% | |
| State Representative (State House District 38) | Joey Andrews (Democratic) | 81% | |
| State Representative (State House District 39) | Pauline Wendzel (R) | 19% |
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
- South Haven website: http://www.south-haven.com
- South Haven laws: search for the South Haven, Michigan code of ordinances
- Van Buren County laws: search for the Van Buren County, Michigan code of ordinances
- Allegan County website: http://www.allegancounty.org
- Allegan County laws: search for the Allegan County, Michigan code of ordinances
State legislative districts
| State senate district | Share of ZIP residents |
|---|---|
| State Senate District 20 | 100% |
| State house district | Share of ZIP residents |
|---|---|
| State House District 38 | 81% |
| State House District 39 | 19% |
Voting precincts
10 voting precincts overlap ZIP 49090. 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:49090")
ZIP 49090 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.