We have 0 parcels measured as septic in ZIP 99011 itself (Spokane County, Washington), out of 25 parcels in our records for this ZIP, of which 11 are recorded as on sewer.
| County | Land in this ZIP | Documents held | On septic (county) | On sewer (county) |
|---|---|---|---|---|
| Spokane County, Washington | 100% | 27 | 36,413 | 127,463 |
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 have measured 0 parcels as septic in ZIP 99011 itself, out of 25 parcels in our records for this ZIP.
ZIP 99011 falls in Spokane County, Washington.