ZIP Code 78338

78338 is one of Texas's ZIP codes, delivering to addresses in Armstrong, Kenedy County.

City: Armstrong
County: Kenedy County
State: Texas
Prefix: 783xx

Where this code sits

78338 is part of the 783xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Armstrong.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 78338 delivers to without sharing its boundary.

361 Area code 361

ZIP codes nearest 78338

The ZIP codes whose reference points sit closest to 78338.
ZIP code	Distance	Delivers to
ZIP code 78385	20 mi	Sarita, TX
ZIP code 78353	26 mi	Encino, TX
ZIP code 78590	27 mi	San Perlita, TX
ZIP code 78580	27 mi	Raymondville, TX
ZIP code 78561	29 mi	Lasara, TX
ZIP code 78598	30 mi	Port Mansfield, TX
ZIP code 78379	31 mi	Riviera, TX
ZIP code 78569	32 mi	Lyford, 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 78338, plotted from its record coordinates.

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

Scope ZIP code 78338. 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.