ZIP Code 76687

76687 is one of Texas's ZIP codes, delivering to addresses in Thornton, Limestone County.

City: Thornton
County: Limestone County
State: Texas
Prefix: 766xx

Where this code sits

76687 is part of the 766xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Thornton.

Thornton Texas ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 76687 delivers to without sharing its boundary.

254 Area code 254

ZIP codes nearest 76687

The ZIP codes whose reference points sit closest to 76687.
ZIP code	Distance	Delivers to
ZIP code 76642	8.9 mi	Groesbeck, TX
ZIP code 76653	9.5 mi	Kosse, TX
ZIP code 75838	17 mi	Donie, TX
ZIP code 75846	19 mi	Jewett, TX
ZIP code 76667	19 mi	Mexia, TX
ZIP code 77865	20 mi	Marquez, TX
ZIP code 76629	20 mi	Bremond, TX
ZIP code 75860	20 mi	Teague, 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 76687, plotted from its record coordinates.

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

Scope ZIP code 76687. 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.