ZIP 98422 falls in Pierce County, Washington, where we hold 200,696 parcels measured as septic county-wide. We do not have a per-ZIP parcel count for this county, so this is the county total, not a count specific to ZIP 98422.
ZCTA 98422 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) |
|---|---|---|---|---|
| Pierce County, Washington | 98% | 172,075 | 200,696 | — |
| King County, Washington | 2% | 184,607 | 84,437 | 486,662 |
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 200,696 parcels measured as septic for Pierce County, Washington as a whole, not broken out by ZIP.
ZIP 98422 spans 2 counties: Pierce County, Washington, King County, Washington.