ZIP 85545 falls in Maricopa County, Arizona, where we hold 103,791 parcels measured as septic county-wide and 1,420,870 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 85545.
ZCTA 85545 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) |
|---|---|---|---|---|
| Maricopa County, Arizona | 50% | 223,158 | 103,791 | 1,420,870 |
| Gila County, Arizona | 50% | — | 6,300 | 16,182 |
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 103,791 parcels measured as septic for Maricopa County, Arizona as a whole, not broken out by ZIP.
ZIP 85545 spans 2 counties: Maricopa County, Arizona, Gila County, Arizona.