ZIP Code 75603

75603 is one of Texas's ZIP codes, delivering to addresses in Longview, Gregg County.

City: Longview
County: Gregg County
State: Texas
Prefix: 756xx

Where this code sits

75603 is part of the 756xx range, the group of codes handled by one mail processing centre. Longview is served by 9 ZIP codes in total; the full list, with the county each falls in, is on the Longview page.

Longview Texas ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 75603 delivers to without sharing its boundary.

ZIP codes nearest 75603

The ZIP codes whose reference points sit closest to 75603.
ZIP code	Distance	Delivers to
ZIP code 75602	3.2 mi	Longview, TX
ZIP code 75606	5.4 mi	Longview, TX
ZIP code 75601	6.4 mi	Longview, TX
ZIP code 75607	7.2 mi	Longview, TX
ZIP code 75615	7.2 mi	Longview, TX
ZIP code 75641	8.0 mi	Easton, TX
ZIP code 75604	8.5 mi	Longview, TX
ZIP code 75662	9.4 mi	Kilgore, 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 75603, plotted from its record coordinates.

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

Scope ZIP code 75603. 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.