ZIP 48170 falls in Wayne County, Michigan, where we hold 19,965 parcels measured as septic county-wide and 534,729 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 48170.
ZCTA 48170 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) |
|---|---|---|---|---|
| Wayne County, Michigan | 55% | — | 19,965 | 534,729 |
| Washtenaw County, Michigan | 45% | 11,810 | — | — |
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 19,965 parcels measured as septic for Wayne County, Michigan as a whole, not broken out by ZIP.
ZIP 48170 spans 2 counties: Wayne County, Michigan, Washtenaw County, Michigan.