We have 32 parcels measured as septic in ZIP 85631 itself (Pinal County, Arizona), out of 1,372 parcels in our records for this ZIP, of which 1,291 are recorded as on sewer.
| County | Land in this ZIP | Documents held | On septic (county) | On sewer (county) |
|---|---|---|---|---|
| Pinal County, Arizona | 100% | — | 17,685 | 126,051 |
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 32 parcels as septic in ZIP 85631 itself, out of 1,372 parcels in our records for this ZIP.
ZIP 85631 falls in Pinal County, Arizona.