ZIP Code 77503

77503 is one of Texas's ZIP codes, delivering to addresses in Pasadena, Harris County.

City: Pasadena
County: Harris County
State: Texas
Prefix: 775xx

Where this code sits

77503 is part of the 775xx range, the group of codes handled by one mail processing centre. Pasadena is served by 8 ZIP codes in total; the full list, with the county each falls in, is on the Pasadena page.

Pasadena Texas ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 77503 delivers to without sharing its boundary.

ZIP codes nearest 77503

The ZIP codes whose reference points sit closest to 77503.
ZIP code	Distance	Delivers to
ZIP code 77536	2.1 mi	Deer Park, TX
ZIP code 77502	2.5 mi	Pasadena, TX
ZIP code 77505	2.6 mi	Pasadena, TX
ZIP code 77506	2.7 mi	Pasadena, TX
ZIP code 77501	3.1 mi	Pasadena, TX
ZIP code 77504	3.2 mi	Pasadena, TX
ZIP code 77587	4.5 mi	South Houston, TX
ZIP code 77034	5.2 mi	Houston, TX

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 77503, plotted from its record coordinates.

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

Scope ZIP code 77503. 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.