ZIP code 49078: Otsego, MI
ZIP code 49078 is in Otsego (43% of residents), in Allegan County (94%), Kalamazoo County (4.9%) and Van Buren County (1.2%), Michigan. 57% of its residents live outside city limits. It is in Michigan's 4th congressional district. Its state senate districts are State Senate District 18 (94%), State Senate District 19 (4.9%) and State Senate District 20 (1.2%); its state house districts are State House District 42 (63%), State House District 39 (32%) and State House District 43 (4.4%).
See it on the mapAll of Michigan
City and county
| City or town | Share of ZIP residents |
|---|---|
| Otsego | 43% |
| County | Share of ZIP residents |
|---|---|
| Allegan County | 94% |
| Kalamazoo County | 4.9% |
| Van Buren County | 1.2% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| Otsego city | 43% |
| Otsego township | 42% |
| Alamo township | 4.9% |
| Watson township | 4.4% |
| Trowbridge township | 2.1% |
| Gun Plain township | 1.9% |
| Pine Grove township | 1.2% |
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 18) | Thomas Albert (R) | 94% | |
| State Senator (State Senate District 19) | Sean McCann (Democratic) | 4.9% | |
| State Senator (State Senate District 20) | Aric Nesbitt (R) | 1.2% | |
| State Representative (State House District 42) | Matt Hall (R) | 63% | |
| State Representative (State House District 39) | Pauline Wendzel (R) | 32% | |
| State Representative (State House District 43) | Rachelle Smit (R) | 4.4% |
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
- Otsego laws: search for the Otsego, Michigan code of ordinances
- Allegan County website: http://www.allegancounty.org
- Allegan County laws: search for the Allegan County, Michigan code of ordinances
- Kalamazoo County website: http://www.kalcounty.com
- Kalamazoo County laws: search for the Kalamazoo County, Michigan code of ordinances
State legislative districts
| State senate district | Share of ZIP residents |
|---|---|
| State Senate District 18 | 94% |
| State Senate District 19 | 4.9% |
| State Senate District 20 | 1.2% |
| State house district | Share of ZIP residents |
|---|---|
| State House District 42 | 63% |
| State House District 39 | 32% |
| State House District 43 | 4.4% |
Voting precincts
8 voting precincts overlap ZIP 49078. 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:49078")
ZIP 49078 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.