ZIP Code 85145

85145 is one of Arizona's ZIP codes, delivering to addresses in Red Rock, Pinal County.

City: Red Rock
County: Pinal County
State: Arizona
Prefix: 851xx

Where this code sits

85145 is part of the 851xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Red Rock.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 85145 delivers to without sharing its boundary.

520 Area code 520

ZIP codes nearest 85145

The ZIP codes whose reference points sit closest to 85145.
ZIP code	Distance	Delivers to
ZIP code 85141	9.0 mi	Picacho, AZ
ZIP code 85653	13 mi	Marana, AZ
ZIP code 85658	15 mi	Marana, AZ
ZIP code 85654	16 mi	Rillito, AZ
ZIP code 85652	17 mi	Cortaro, AZ
ZIP code 85131	18 mi	Eloy, AZ
ZIP code 85743	19 mi	Tucson, AZ
ZIP code 85742	20 mi	Tucson, AZ

Straight-line distance between place reference points, not driving distance. Where a place has no Census Gazetteer point, its postal centroid is used instead.

Each point is the reference point for 85145, plotted from its record coordinates.

Reference points and footprint
Not an official NANPA boundary
Not a USPS delivery area

Scope ZIP code 85145. Source GeoNames US postal codes (2026-07 postal dump) and Census 2024 county Gazetteer (2024 Gazetteer). Updated 15 July 2026. A ZIP code is a set of delivery routes, not an area; the point shown is a record coordinate, not a centre.