ZIP 48442 falls in Oakland County, Michigan, where we hold 55,180 parcels measured as septic county-wide and 376,100 on sewer. We do not have a per-ZIP parcel count for this county, so this is the county total, not a count specific to ZIP 48442.
ZCTA 48442 is not entirely inside one county. Land-area share is from the 2020 Census ZCTA-to-county relationship file.
| County | Land in this ZIP | Documents held | On septic (county) | On sewer (county) |
|---|---|---|---|---|
| Oakland County, Michigan | 96% | — | 55,180 | 376,100 |
| Genesee County, Michigan | 3% | 1 | — | — |
| Livingston County, Michigan | 1% | — | — | — |
1 businesses on record with an address in this ZIP: pumping, installation, design, inspection and repair. Not an endorsement, and we take no fee.
| Company | City | Phone | Rating |
|---|---|---|---|
| Pelkey Services | Holly | (248) 990-0332 | — |
Land-area overlap is from the 2020 Census Bureau ZCTA5-to-county relationship file, not an estimate of ours. Parcel and document counts are rows we hold, not a survey of every property in the ZIP. Last verified 2026-09-01.
We hold 55,180 parcels measured as septic for Oakland County, Michigan as a whole, not broken out by ZIP.
ZIP 48442 spans 3 counties: Oakland County, Michigan, Genesee County, Michigan, Livingston County, Michigan.