ZIP Code 78879

78879 is one of Texas's ZIP codes, delivering to addresses in Rio Frio, Real County.

City: Rio Frio
County: Real County
State: Texas
Prefix: 788xx

Where this code sits

78879 is part of the 788xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Rio Frio.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 78879 delivers to without sharing its boundary.

830 Area code 830

ZIP codes nearest 78879

The ZIP codes whose reference points sit closest to 78879.
ZIP code	Distance	Delivers to
ZIP code 78873	8.5 mi	Leakey, TX
ZIP code 78884	10 mi	Utopia, TX
ZIP code 78838	11 mi	Concan, TX
ZIP code 78885	12 mi	Vanderpool, TX
ZIP code 78833	18 mi	Camp Wood, TX
ZIP code 78870	25 mi	Knippa, TX
ZIP code 78828	26 mi	Barksdale, TX
ZIP code 78881	27 mi	Sabinal, 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 78879, plotted from its record coordinates.

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

Scope ZIP code 78879. 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.