ZIP 98605 falls in Skamania County, Washington, where we hold 3,556 parcels measured as septic county-wide and 970 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 98605.
ZCTA 98605 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) |
|---|---|---|---|---|
| Skamania County, Washington | 96% | — | 3,556 | 970 |
| Klickitat County, Washington | 4% | 10 | 6,529 | 3,763 |
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 3,556 parcels measured as septic for Skamania County, Washington as a whole, not broken out by ZIP.
ZIP 98605 spans 2 counties: Skamania County, Washington, Klickitat County, Washington.