ZIP Code 78204

78204 is one of Texas's ZIP codes, delivering to addresses in San Antonio, Bexar County.

City: San Antonio
County: Bexar County
State: Texas
Prefix: 782xx

Where this code sits

78204 is part of the 782xx range, the group of codes handled by one mail processing centre. San Antonio is served by 83 ZIP codes in total; the full list, with the county each falls in, is on the San Antonio page.

San Antonio Texas ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 78204 delivers to without sharing its boundary.

ZIP codes nearest 78204

The ZIP codes whose reference points sit closest to 78204.
ZIP code	Distance	Delivers to
ZIP code 78234	1.5 mi	Jbsa Ft Sam Houston, TX
ZIP code 78236	1.5 mi	Jbsa Lackland, TX
ZIP code 78288	1.5 mi	San Antonio, TX
ZIP code 78205	1.5 mi	San Antonio, TX
ZIP code 78207	1.6 mi	San Antonio, TX
ZIP code 78225	1.6 mi	San Antonio, TX
ZIP code 78212	2.4 mi	San Antonio, TX
ZIP code 78210	2.6 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 78204, plotted from its record coordinates.

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

Scope ZIP code 78204. 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.