ZIP Code 78101

78101 is one of Texas's ZIP codes, delivering to addresses in Adkins, Bexar County.

City: Adkins
County: Bexar County
State: Texas
Prefix: 781xx

Where this code sits

78101 is part of the 781xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Adkins.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 78101 delivers to without sharing its boundary.

ZIP codes nearest 78101

The ZIP codes whose reference points sit closest to 78101.
ZIP code	Distance	Delivers to
ZIP code 78263	3.4 mi	San Antonio, TX
ZIP code 78152	5.7 mi	Saint Hedwig, TX
ZIP code 78219	6.7 mi	San Antonio, TX
ZIP code 78222	7.9 mi	San Antonio, TX
ZIP code 78244	8.4 mi	San Antonio, TX
ZIP code 78220	9.1 mi	San Antonio, TX
ZIP code 78121	9.4 mi	La Vernia, TX
ZIP code 78109	10 mi	Converse, 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 78101, plotted from its record coordinates.

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

Scope ZIP code 78101. 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.