ZIP Code 78109

78109 is one of Texas's ZIP codes, delivering to addresses in Converse, Bexar County.

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

Where this code sits

78109 is part of the 781xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Converse.

Converse Texas ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 78109 delivers to without sharing its boundary.

ZIP codes nearest 78109

The ZIP codes whose reference points sit closest to 78109.
ZIP code	Distance	Delivers to
ZIP code 78239	2.5 mi	San Antonio, TX
ZIP code 78148	2.6 mi	Universal City, TX
ZIP code 78244	3.1 mi	San Antonio, TX
ZIP code 78233	3.7 mi	San Antonio, TX
ZIP code 78219	4.9 mi	San Antonio, TX
ZIP code 78154	5.0 mi	Schertz, TX
ZIP code 78218	5.1 mi	San Antonio, TX
ZIP code 78217	6.1 mi	San Antonio, 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 78109, plotted from its record coordinates.

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

Scope ZIP code 78109. 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.