We have 436 parcels measured as septic in ZIP 85658 itself (Pinal County, Arizona), out of 609 parcels in our records for this ZIP, of which 23 are recorded as on sewer.
ZCTA 85658 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) |
|---|---|---|---|---|
| Pinal County, Arizona | 65% | — | 17,685 | 126,051 |
| Pima County, Arizona | 35% | 348,481 | — | — |
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 436 parcels as septic in ZIP 85658 itself, out of 609 parcels in our records for this ZIP.
ZIP 85658 spans 2 counties: Pinal County, Arizona, Pima County, Arizona.