ZIP Code 85737

85737 is one of Arizona's ZIP codes, delivering to addresses in Tucson, Pima County.

City: Tucson
County: Pima County
State: Arizona
Prefix: 857xx

Where this code sits

85737 is part of the 857xx range, the group of codes handled by one mail processing centre. Tucson is served by 54 ZIP codes in total; the full list, with the county each falls in, is on the Tucson page.

Tucson Arizona ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 85737 delivers to without sharing its boundary.

520 Area code 520

ZIP codes nearest 85737

The ZIP codes whose reference points sit closest to 85737.
ZIP code	Distance	Delivers to
ZIP code 85755	1.9 mi	Tucson, AZ
ZIP code 85739	4.7 mi	Tucson, AZ
ZIP code 85704	5.7 mi	Tucson, AZ
ZIP code 85738	6.5 mi	Catalina, AZ
ZIP code 85742	6.9 mi	Tucson, AZ
ZIP code 85741	7.2 mi	Tucson, AZ
ZIP code 85718	7.3 mi	Tucson, AZ
ZIP code 85652	9.7 mi	Cortaro, 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 85737, plotted from its record coordinates.

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

Scope ZIP code 85737. 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.