ZIP 56661 falls in Koochiching County, Minnesota, where we hold 3,267 parcels measured as septic county-wide and 336 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 56661.
ZCTA 56661 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) |
|---|---|---|---|---|
| Koochiching County, Minnesota | 51% | — | 3,267 | 336 |
| Itasca County, Minnesota | 43% | — | 13,646 | 8,765 |
| Beltrami County, Minnesota | 7% | 107 | — | — |
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 3,267 parcels measured as septic for Koochiching County, Minnesota as a whole, not broken out by ZIP.
ZIP 56661 spans 3 counties: Koochiching County, Minnesota, Itasca County, Minnesota, Beltrami County, Minnesota.