ZIP code 48442: Holly, MI
ZIP code 48442 is in Holly (28% of residents), in Oakland County (93%), Genesee County (6.2%) and Livingston County (1.1%), Michigan. 72% of its residents live outside city limits. It is in Michigan's 9th congressional district (93%), Michigan's 8th congressional district (6.2%) and Michigan's 7th congressional district (1.1%). Its state senate districts are State Senate District 22 (52%), State Senate District 23 (42%) and State Senate District 27 (6.1%); its state house districts are State House District 72 (74%), State House District 68 (21%), State House District 51 (2.5%), State House District 52 (1.6%) and State House District 50 (1.1%).
See it on the mapAll of Michigan
City and county
| City or town | Share of ZIP residents |
|---|---|
| Holly | 28% |
| Lake Fenton | <0.1% |
| County | Share of ZIP residents |
|---|---|
| Oakland County | 93% |
| Genesee County | 6.2% |
| Livingston County | 1.1% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| Holly township | 51% |
| Rose township | 23% |
| Groveland township | 15% |
| Grand Blanc charter township | 6.1% |
| Springfield charter township | 2.7% |
| Highland charter township | 1.4% |
| Hartland township | 1.1% |
| Fenton charter township | <0.1% |
Congressional districts
| Congressional district | Share of ZIP residents |
|---|---|
| Michigan's 9th congressional district (MI-09) | 93% |
| Michigan's 8th congressional district (MI-08) | 6.2% |
| Michigan's 7th congressional district (MI-07) | 1.1% |
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-09) | Lisa C. McClain (R) | 202-225-2106 | 93% |
| U.S. Representative (MI-08) | Kristen McDonald Rivet (D) | 202-225-3611 | 6.2% |
| U.S. Representative (MI-07) | Tom Barrett (R) | 202-225-4872 | 1.1% |
| 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 22) | Lana Theis (R) | 52% | |
| State Senator (State Senate District 23) | Jim Runestad (R) | 42% | |
| State Senator (State Senate District 27) | John Cherry (Democratic) | 6.1% | |
| State Representative (State House District 72) | Mike Mueller (R) | 74% | |
| State Representative (State House District 68) | David Martin (R) | 21% | |
| State Representative (State House District 51) | Matt Maddock (R) | 2.5% | |
| State Representative (State House District 52) | Mike Harris (R) | 1.6% | |
| State Representative (State House District 50) | Jason Woolford (R) | 1.1% |
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
- Holly website: http://www.vi.holly.mi.us/
- Holly laws: search for the Holly, Michigan code of ordinances
- Oakland County website: http://www.oakgov.com
- Oakland County laws: search for the Oakland County, Michigan code of ordinances
- Genesee County website: http://www.gc4me.com
- Genesee County laws: search for the Genesee County, Michigan code of ordinances
State legislative districts
| State senate district | Share of ZIP residents |
|---|---|
| State Senate District 22 | 52% |
| State Senate District 23 | 42% |
| State Senate District 27 | 6.1% |
| State house district | Share of ZIP residents |
|---|---|
| State House District 72 | 74% |
| State House District 68 | 21% |
| State House District 51 | 2.5% |
| State House District 52 | 1.6% |
| State House District 50 | 1.1% |
Voting precincts
18 voting precincts overlap ZIP 48442. 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:48442")
ZIP 48442 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.