ZIP Code 78621

78621 is one of Texas's ZIP codes, delivering to addresses in Elgin, Bastrop County.

City: Elgin
County: Bastrop County
State: Texas
Prefix: 786xx

Where this code sits

78621 is part of the 786xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Elgin.

Elgin Texas ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 78621 delivers to without sharing its boundary.

ZIP codes nearest 78621

The ZIP codes whose reference points sit closest to 78621.
ZIP code	Distance	Delivers to
ZIP code 78650	8.3 mi	Mc Dade, TX
ZIP code 78653	9.5 mi	Manor, TX
ZIP code 78763	11 mi	Austin, TX
ZIP code 78615	11 mi	Coupland, TX
ZIP code 78602	14 mi	Bastrop, TX
ZIP code 78725	16 mi	Austin, TX
ZIP code 78724	16 mi	Austin, TX
ZIP code 78691	17 mi	Pflugerville, 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 78621, plotted from its record coordinates.

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

Scope ZIP code 78621. 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.