ZIP 98237 falls in Skagit County, Washington, where we hold 18,281 parcels measured as septic county-wide and 24,293 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 98237.
ZCTA 98237 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) |
|---|---|---|---|---|
| Skagit County, Washington | 85% | 17,997 | 18,281 | 24,293 |
| Whatcom County, Washington | 15% | 158,422 | 24,490 | 47,647 |
1 businesses on record with an address in this ZIP: pumping, installation, design, inspection and repair. Not an endorsement, and we take no fee.
| Company | City | Phone | Rating |
|---|---|---|---|
| Goforth Construction LLC | Concrete | (360) 708-4805 | — |
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 18,281 parcels measured as septic for Skagit County, Washington as a whole, not broken out by ZIP.
ZIP 98237 spans 2 counties: Skagit County, Washington, Whatcom County, Washington.