ZIP Code 77550

77550 is one of Texas's ZIP codes, delivering to addresses in Galveston, Galveston County.

City: Galveston
County: Galveston County
State: Texas
Prefix: 775xx

Where this code sits

77550 is part of the 775xx range, the group of codes handled by one mail processing centre. Galveston is served by 6 ZIP codes in total; the full list, with the county each falls in, is on the Galveston page.

Galveston Texas ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 77550 delivers to without sharing its boundary.

409 Area code 409

ZIP codes nearest 77550

The ZIP codes whose reference points sit closest to 77550.
ZIP code	Distance	Delivers to
ZIP code 77555	2.3 mi	Galveston, TX
ZIP code 77592	2.3 mi	Texas City, TX
ZIP code 77553	2.4 mi	Galveston, TX
ZIP code 77551	2.7 mi	Galveston, TX
ZIP code 77590	10 mi	Texas City, TX
ZIP code 77552	11 mi	Galveston, TX
ZIP code 77650	11 mi	Port Bolivar, TX
ZIP code 77554	12 mi	Galveston, 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 77550, plotted from its record coordinates.

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

Scope ZIP code 77550. 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.