ZIP Code 85178

85178 is one of Arizona's ZIP codes, delivering to addresses in Apache Junction, Pinal County.

City: Apache Junction
County: Pinal County
State: Arizona
Prefix: 851xx

Where this code sits

85178 is part of the 851xx range, the group of codes handled by one mail processing centre. Apache Junction is served by 4 ZIP codes in total; the full list, with the county each falls in, is on the Apache Junction page.

Apache Junction Arizona ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 85178 delivers to without sharing its boundary.

520 Area code 520

ZIP codes nearest 85178

The ZIP codes whose reference points sit closest to 85178.
ZIP code	Distance	Delivers to
ZIP code 85120	1.9 mi	Apache Junction, AZ
ZIP code 85119	2.6 mi	Apache Junction, AZ
ZIP code 85209	5.7 mi	Mesa, AZ
ZIP code 85207	5.8 mi	Mesa, AZ
ZIP code 85208	6.0 mi	Mesa, AZ
ZIP code 85212	6.7 mi	Mesa, AZ
ZIP code 85205	9.8 mi	Mesa, AZ
ZIP code 85206	10 mi	Mesa, 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 85178, plotted from its record coordinates.

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

Scope ZIP code 85178. 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.