ZIP Code 78830

78830 is one of Texas's ZIP codes, delivering to addresses in Big Wells, Dimmit County.

City: Big Wells
County: Dimmit County
State: Texas
Prefix: 788xx

Where this code sits

78830 is part of the 788xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Big Wells.

Big Wells Texas ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 78830 delivers to without sharing its boundary.

830 Area code 830

ZIP codes nearest 78830

The ZIP codes whose reference points sit closest to 78830.
ZIP code	Distance	Delivers to
ZIP code 78827	14 mi	Asherton, TX
ZIP code 78836	15 mi	Catarina, TX
ZIP code 78839	17 mi	Crystal City, TX
ZIP code 78834	18 mi	Carrizo Springs, TX
ZIP code 78014	23 mi	Cotulla, TX
ZIP code 78829	25 mi	Batesville, TX
ZIP code 78017	26 mi	Dilley, TX
ZIP code 78001	28 mi	Artesia Wells, 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 78830, plotted from its record coordinates.

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

Scope ZIP code 78830. 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.