In Yamhill County, Oregon, which covers part of Willamina, we have measured 8,576 parcels on septic and 23,809 on sewer. That is a county measurement. We do not hold a septic count for Willamina on its own and this page does not estimate one. Willamina also extends into Polk County, which are reported separately below and are not included in that figure.
Willamina is a city in Yamhill and Polk Counties, Oregon. The Census Bureau puts its internal point at 45.078649, -123.48487 and its land area at 0.95 square miles. Septic permitting and record keeping happen at the county level, not the city level, which is why every figure below is attributed to the county and linked back to the county page it came from.
| County | Records we hold | Parcels on septic | Parcels on sewer | County records portal | Searchable without an account |
|---|---|---|---|---|---|
| Yamhill County | 285 | 8,576 | 23,809 | county portal | no account needed |
| Polk County | 137 | 4,375 | 21,491 | county portal | account or login required |
Our collection for Yamhill County, Oregon is small, at 285 septic records. Treat it as a starting point for a Willamina property rather than a search that settles the question. The county is genuinely mixed: 8,576 of 32,385 classified parcels are on septic and the rest are sewered. Which side of that line a Willamina address falls on is worth establishing before anything else. The county publishes a records portal that we were able to search without creating an account, which makes checking a specific parcel something you can do yourself in a few minutes.
Septic is one subject with very different jobs inside it. These go straight to the page that does yours.
| If you are a | Go to | Because it covers |
|---|---|---|
| Homeowner | Septic pumping in Willamina | keeping the system you have working |
| Designer or engineer | Septic design in Willamina | design flow, tank capacity, dispersal sizing |
| Installer or contractor | Septic installation in Willamina | site evaluation, permit sequence, inspection |
| Septic pumper | Septic pumping in Willamina | tank access, lids and service interval |
| Inspector | Septic inspection in Willamina | what gets checked and what a failure means |
| Land investor | Septic installation in Willamina | whether raw land can take a system at all |
No. We measure septic and sewer at parcel level and roll it up by county. In Yamhill County, Oregon, which covers part of Willamina, we have measured 8,576 parcels on septic and 23,809 on sewer. That is a county measurement. We do not hold a septic count for Willamina on its own and this page does not estimate one. Willamina also extends into Polk County, which are reported separately below and are not included in that figure.
Willamina is in Yamhill and Polk Counties, Oregon.
From the Census ZCTA-to-place relationship file, with the share of Willamina’s land area that falls in each. A ZIP is not a place boundary and the two only ever partly agree, which is exactly why both pages exist.
Straight-line distance from the Census internal point of Willamina.
Parcel Perfect generates a code-shaped septic design and as-built style drawing for a parcel from the records and site data we hold, and shows every parcel we have classified as septic or sewer on one map. Both are open to use for any parcel in Yamhill and Polk Counties, Oregon.