ZIP 83661 falls in Payette County, Idaho, where we hold 2,965 parcels measured as septic county-wide and 5,464 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 83661.
ZCTA 83661 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) |
|---|---|---|---|---|
| Payette County, Idaho | 79% | 4,105 | 2,965 | 5,464 |
| Washington County, Idaho | 21% | 2,282 | 2,295 | 2,378 |
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 2,965 parcels measured as septic for Payette County, Idaho as a whole, not broken out by ZIP.
ZIP 83661 spans 2 counties: Payette County, Idaho, Washington County, Idaho.