ZIP 98380 falls in Kitsap County, Washington, where we hold 26,305 parcels measured as septic county-wide and 52,943 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 98380.
ZCTA 98380 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) |
|---|---|---|---|---|
| Kitsap County, Washington | 94% | 185,502 | 26,305 | 52,943 |
| Mason County, Washington | 6% | 76,934 | 20,373 | 5,803 |
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 26,305 parcels measured as septic for Kitsap County, Washington as a whole, not broken out by ZIP.
ZIP 98380 spans 2 counties: Kitsap County, Washington, Mason County, Washington.