ZIP Code 77989

77989 is one of Texas's ZIP codes, delivering to addresses in Thomaston, DeWitt County.

City: Thomaston
County: DeWitt County
State: Texas
Prefix: 779xx

Where this code sits

77989 is part of the 779xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Thomaston.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 77989 delivers to without sharing its boundary.

361 Area code 361

ZIP codes nearest 77989

The ZIP codes whose reference points sit closest to 77989.
ZIP code	Distance	Delivers to
ZIP code 77976	4.8 mi	Nursery, TX
ZIP code 77902	5.9 mi	Victoria, TX
ZIP code 77954	10 mi	Cuero, TX
ZIP code 77974	10 mi	Meyersville, TX
ZIP code 77904	13 mi	Victoria, TX
ZIP code 77901	16 mi	Victoria, TX
ZIP code 77903	16 mi	Victoria, TX
ZIP code 77905	18 mi	Victoria, 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 77989, plotted from its record coordinates.

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

Scope ZIP code 77989. 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.