ZIP Code 78640

78640 is one of Texas's ZIP codes, delivering to addresses in Kyle, Hays County.

City: Kyle
County: Hays County
State: Texas
Prefix: 786xx

Where this code sits

78640 is part of the 786xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Kyle.

Kyle Texas ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 78640 delivers to without sharing its boundary.

ZIP codes nearest 78640

The ZIP codes whose reference points sit closest to 78640.
ZIP code	Distance	Delivers to
ZIP code 78610	6.7 mi	Buda, TX
ZIP code 78656	7.1 mi	Maxwell, TX
ZIP code 78652	8.8 mi	Manchaca, TX
ZIP code 78747	10 mi	Austin, TX
ZIP code 78666	11 mi	San Marcos, TX
ZIP code 78655	11 mi	Martindale, TX
ZIP code 78667	11 mi	San Marcos, TX
ZIP code 78644	12 mi	Lockhart, 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 78640, plotted from its record coordinates.

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

Scope ZIP code 78640. 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.