ZIP 98621 falls in Pacific County, Washington, where we hold 12,029 parcels measured as septic county-wide and 137 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 98621.
ZCTA 98621 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) |
|---|---|---|---|---|
| Pacific County, Washington | 58% | 61 | 12,029 | 137 |
| Wahkiakum County, Washington | 42% | 18 | 1,788 | 357 |
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 12,029 parcels measured as septic for Pacific County, Washington as a whole, not broken out by ZIP.
ZIP 98621 spans 2 counties: Pacific County, Washington, Wahkiakum County, Washington.