ZIP 97331 falls in Benton County, Oregon, where we hold 6,366 parcels measured as septic county-wide and 19,587 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 97331.
| County | Land in this ZIP | Documents held | On septic (county) | On sewer (county) |
|---|---|---|---|---|
| Benton County, Oregon | 100% | 123 | 6,366 | 19,587 |
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 6,366 parcels measured as septic for Benton County, Oregon as a whole, not broken out by ZIP.
ZIP 97331 falls in Benton County, Oregon.