ZIP 55971 falls in Fillmore County, Minnesota, where we hold 4,866 parcels measured as septic county-wide and 5,279 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 55971.
ZCTA 55971 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) |
|---|---|---|---|---|
| Fillmore County, Minnesota | 44% | — | 4,866 | 5,279 |
| Winona County, Minnesota | 38% | — | 4,512 | 11,875 |
| Houston County, Minnesota | 18% | — | 6,134 | 2,844 |
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 4,866 parcels measured as septic for Fillmore County, Minnesota as a whole, not broken out by ZIP.
ZIP 55971 spans 3 counties: Fillmore County, Minnesota, Winona County, Minnesota, Houston County, Minnesota.