ZIP Code 77021

77021 is one of Texas's ZIP codes, delivering to addresses in Houston, Harris County.

City: Houston
County: Harris County
State: Texas
Prefix: 770xx

Where this code sits

77021 is part of the 770xx range, the group of codes handled by one mail processing centre. Houston is served by 178 ZIP codes in total; the full list, with the county each falls in, is on the Houston page.

Houston Texas ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 77021 delivers to without sharing its boundary.

ZIP codes nearest 77021

The ZIP codes whose reference points sit closest to 77021.
ZIP code	Distance	Delivers to
ZIP code 77004	2.1 mi	Houston, TX
ZIP code 77033	2.1 mi	Houston, TX
ZIP code 77051	2.7 mi	Houston, TX
ZIP code 77030	2.8 mi	Houston, TX
ZIP code 77054	2.8 mi	Houston, TX
ZIP code 77023	3.0 mi	Houston, TX
ZIP code 77087	3.4 mi	Houston, TX
ZIP code 77292	3.7 mi	Houston, 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 77021, plotted from its record coordinates.

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

Scope ZIP code 77021. 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.