ZIP Code 77643

77643 is one of Texas's ZIP codes, delivering to addresses in Port Arthur, Jefferson County.

City: Port Arthur
County: Jefferson County
State: Texas
Prefix: 776xx

Where this code sits

77643 is part of the 776xx range, the group of codes handled by one mail processing centre. Port Arthur is served by 4 ZIP codes in total; the full list, with the county each falls in, is on the Port Arthur page.

Port Arthur Texas ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 77643 delivers to without sharing its boundary.

409 Area code 409

ZIP codes nearest 77643

The ZIP codes whose reference points sit closest to 77643.
ZIP code	Distance	Delivers to
ZIP code 77619	3.1 mi	Groves, TX
ZIP code 77611	4.5 mi	Bridge City, TX
ZIP code 77642	4.5 mi	Port Arthur, TX
ZIP code 77651	5.8 mi	Port Neches, TX
ZIP code 77639	7.0 mi	Orangefield, TX
ZIP code 77630	7.5 mi	Orange, TX
ZIP code 77627	8.0 mi	Nederland, TX
ZIP code 77640	8.5 mi	Port Arthur, 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 77643, plotted from its record coordinates.

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

Scope ZIP code 77643. 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.