ZIP 56540 falls in Polk County, Minnesota, where we hold 8,973 parcels measured as septic county-wide and 3,467 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 56540.
ZCTA 56540 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) |
|---|---|---|---|---|
| Polk County, Minnesota | 73% | — | 8,973 | 3,467 |
| Norman County, Minnesota | 27% | — | 2,124 | 1,421 |
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 8,973 parcels measured as septic for Polk County, Minnesota as a whole, not broken out by ZIP.
ZIP 56540 spans 2 counties: Polk County, Minnesota, Norman County, Minnesota.