ZIP 98512 falls in Thurston County, Washington, where we hold 28,502 parcels measured as septic county-wide and 60,687 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 98512.
| County | Land in this ZIP | Documents held | On septic (county) | On sewer (county) |
|---|---|---|---|---|
| Thurston County, Washington | 100% | 26,354 | 28,502 | 60,687 |
3 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 |
|---|---|---|---|
| Bay Shore Septic Sewer Water | Olympia | (360) 866-9200 | 4.6 (24) |
| Petunia Septic Service | Olympia | (360) 754-3818 | 4.2 (5) |
| Dodge Excavation LLC | Olympia | (360) 349-5333 | — |
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 28,502 parcels measured as septic for Thurston County, Washington as a whole, not broken out by ZIP.
ZIP 98512 falls in Thurston County, Washington.