ZIP Code 77617

77617 is one of Texas's ZIP codes, delivering to addresses in Gilchrist, Galveston County.

City: Gilchrist
County: Galveston County
State: Texas
Prefix: 776xx

Where this code sits

77617 is part of the 776xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Gilchrist.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 77617 delivers to without sharing its boundary.

409 Area code 409

ZIP codes nearest 77617

The ZIP codes whose reference points sit closest to 77617.
ZIP code	Distance	Delivers to
ZIP code 77623	3.4 mi	High Island, TX
ZIP code 77514	12 mi	Anahuac, TX
ZIP code 77650	14 mi	Port Bolivar, TX
ZIP code 77661	19 mi	Stowell, TX
ZIP code 77665	22 mi	Winnie, TX
ZIP code 77553	24 mi	Galveston, TX
ZIP code 77555	24 mi	Galveston, TX
ZIP code 77592	24 mi	Texas City, 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 77617, plotted from its record coordinates.

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

Scope ZIP code 77617. 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.