ZIP code 48439: Grand Blanc, MI
ZIP code 48439 is in Grand Blanc (16% of residents) and Burton (5.4%), in Genesee County (99%) and Oakland County (0.7%), Michigan. 79% of its residents live outside city limits. It is in Michigan's 8th congressional district (99%) and Michigan's 9th congressional district (0.7%). Its state senate districts are State Senate District 27 (96%), State Senate District 23 (3.2%), State Senate District 22 (0.8%) and State Senate District 26 (<0.1%); its state house districts are State House District 68 (53%), State House District 72 (46%) and State House District 71 (0.9%).
See it on the mapAll of Michigan
City and county
| City or town | Share of ZIP residents |
|---|---|
| Grand Blanc | 16% |
| Burton | 5.4% |
| County | Share of ZIP residents |
|---|---|
| Genesee County | 99% |
| Oakland County | 0.7% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| Grand Blanc charter township | 68% |
| Grand Blanc city | 16% |
| Mundy township | 7.4% |
| Burton city | 5.4% |
| Atlas township | 3.2% |
| Holly township | 0.7% |
| Fenton charter township | 0.1% |
| Davison township | <0.1% |
Congressional districts
| Congressional district | Share of ZIP residents |
|---|---|
| Michigan's 8th congressional district (MI-08) | 99% |
| Michigan's 9th congressional district (MI-09) | 0.7% |
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
| Office | Member | Contact | Share of residents |
|---|---|---|---|
| U.S. Representative (MI-08) | Kristen McDonald Rivet (D) | 202-225-3611 | 99% |
| U.S. Representative (MI-09) | Lisa C. McClain (R) | 202-225-2106 | 0.7% |
| 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 27) | John Cherry (Democratic) | 96% | |
| State Senator (State Senate District 23) | Jim Runestad (R) | 3.2% | |
| State Senator (State Senate District 22) | Lana Theis (R) | 0.8% | |
| State Senator (State Senate District 26) | Kevin Daley (R) | <0.1% | |
| State Representative (State House District 68) | David Martin (R) | 53% | |
| State Representative (State House District 72) | Mike Mueller (R) | 46% | |
| State Representative (State House District 71) | Brian BeGole (R) | 0.9% |
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
- Grand Blanc website: https://www.twp.grand-blanc.mi.us/
- Grand Blanc laws: search for the Grand Blanc, Michigan code of ordinances
- Burton website: https://www.burtonmi.gov/
- Burton laws: search for the Burton, Michigan code of ordinances
- Genesee County website: http://www.gc4me.com
- Genesee County laws: search for the Genesee County, Michigan code of ordinances
- Oakland County website: http://www.oakgov.com
- Oakland County laws: search for the Oakland County, Michigan code of ordinances
State legislative districts
| State senate district | Share of ZIP residents |
|---|---|
| State Senate District 27 | 96% |
| State Senate District 23 | 3.2% |
| State Senate District 22 | 0.8% |
| State Senate District 26 | <0.1% |
| State house district | Share of ZIP residents |
|---|---|
| State House District 68 | 53% |
| State House District 72 | 46% |
| State House District 71 | 0.9% |
Voting precincts
25 voting precincts overlap ZIP 48439. 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:48439")
ZIP 48439 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.