ZIP Code 78642

78642 is one of Texas's ZIP codes, delivering to addresses in Liberty Hill, Williamson County.

City: Liberty Hill
County: Williamson County
State: Texas
Prefix: 786xx

Where this code sits

78642 is part of the 786xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Liberty Hill.

Liberty Hill Texas ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 78642 delivers to without sharing its boundary.

ZIP codes nearest 78642

The ZIP codes whose reference points sit closest to 78642.
ZIP code	Distance	Delivers to
ZIP code 78641	7.0 mi	Leander, TX
ZIP code 78646	7.5 mi	Leander, TX
ZIP code 78605	9.0 mi	Bertram, TX
ZIP code 78628	11 mi	Georgetown, TX
ZIP code 78633	11 mi	Georgetown, TX
ZIP code 78613	13 mi	Cedar Park, TX
ZIP code 78630	13 mi	Cedar Park, TX
ZIP code 76527	13 mi	Florence, 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 78642, plotted from its record coordinates.

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

Scope ZIP code 78642. 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.