We have 5 parcels measured as septic in ZIP 85309 itself (Maricopa County, Arizona), out of 23 parcels in our records for this ZIP, of which 10 are recorded as on sewer.
| County | Land in this ZIP | Documents held | On septic (county) | On sewer (county) |
|---|---|---|---|---|
| Maricopa County, Arizona | 100% | 223,158 | 103,791 | 1,420,870 |
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 5 parcels as septic in ZIP 85309 itself, out of 23 parcels in our records for this ZIP.
ZIP 85309 falls in Maricopa County, Arizona.