ZIP 49251 falls in Ingham County, Michigan, where we hold 13,500 parcels measured as septic county-wide and 70,019 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 49251.
ZCTA 49251 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) |
|---|---|---|---|---|
| Ingham County, Michigan | 95% | — | 13,500 | 70,019 |
| Jackson County, Michigan | 5% | 1 | 23,247 | 33,495 |
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 13,500 parcels measured as septic for Ingham County, Michigan as a whole, not broken out by ZIP.
ZIP 49251 spans 2 counties: Ingham County, Michigan, Jackson County, Michigan.