ZIP 97378 falls in Yamhill County, Oregon, where we hold 8,576 parcels measured as septic county-wide and 23,809 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 97378.
ZCTA 97378 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) |
|---|---|---|---|---|
| Yamhill County, Oregon | 51% | 285 | 8,576 | 23,809 |
| Polk County, Oregon | 49% | 137 | 4,375 | 21,491 |
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 8,576 parcels measured as septic for Yamhill County, Oregon as a whole, not broken out by ZIP.
ZIP 97378 spans 2 counties: Yamhill County, Oregon, Polk County, Oregon.