ZIP Code 78387

78387 is one of Texas's ZIP codes, delivering to addresses in Sinton, San Patricio County.

City: Sinton
County: San Patricio County
State: Texas
Prefix: 783xx

Where this code sits

78387 is part of the 783xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Sinton.

Sinton Texas ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 78387 delivers to without sharing its boundary.

361 Area code 361

ZIP codes nearest 78387

The ZIP codes whose reference points sit closest to 78387.
ZIP code	Distance	Delivers to
ZIP code 78370	7.6 mi	Odem, TX
ZIP code 78390	8.5 mi	Taft, TX
ZIP code 78352	10 mi	Edroy, TX
ZIP code 78410	14 mi	Corpus Christi, TX
ZIP code 78409	15 mi	Corpus Christi, TX
ZIP code 78374	16 mi	Portland, TX
ZIP code 78359	16 mi	Gregory, TX
ZIP code 78402	17 mi	Corpus Christi, 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 78387, plotted from its record coordinates.

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

Scope ZIP code 78387. 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.