ZIP Code 78655

78655 is one of Texas's ZIP codes, delivering to addresses in Martindale, Caldwell County.

City: Martindale
County: Caldwell County
State: Texas
Prefix: 786xx

Where this code sits

78655 is part of the 786xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Martindale.

Martindale Texas ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 78655 delivers to without sharing its boundary.

ZIP codes nearest 78655

The ZIP codes whose reference points sit closest to 78655.
ZIP code	Distance	Delivers to
ZIP code 78656	4.4 mi	Maxwell, TX
ZIP code 78670	5.1 mi	Staples, TX
ZIP code 78666	5.9 mi	San Marcos, TX
ZIP code 78622	7.3 mi	Fentress, TX
ZIP code 78661	10 mi	Prairie Lea, TX
ZIP code 78640	11 mi	Kyle, TX
ZIP code 78644	11 mi	Lockhart, TX
ZIP code 78638	12 mi	Kingsbury, 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 78655, plotted from its record coordinates.

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

Scope ZIP code 78655. 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.