ZIP 55912 falls in Mower County, Minnesota, where we hold 3,650 parcels measured as septic county-wide and 11,339 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 55912.
ZCTA 55912 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) |
|---|---|---|---|---|
| Mower County, Minnesota | 76% | 1 | 3,650 | 11,339 |
| Freeborn County, Minnesota | 24% | — | — | — |
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 3,650 parcels measured as septic for Mower County, Minnesota as a whole, not broken out by ZIP.
ZIP 55912 spans 2 counties: Mower County, Minnesota, Freeborn County, Minnesota.