ZIP Code 77377

77377 is one of Texas's ZIP codes, delivering to addresses in Tomball, Harris County.

City: Tomball
County: Harris County
State: Texas
Prefix: 773xx

Where this code sits

77377 is part of the 773xx range, the group of codes handled by one mail processing centre. Tomball is served by 2 ZIP codes in total; the full list, with the county each falls in, is on the Tomball page.

Tomball Texas ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 77377 delivers to without sharing its boundary.

ZIP codes nearest 77377

The ZIP codes whose reference points sit closest to 77377.
ZIP code	Distance	Delivers to
ZIP code 77375	3.8 mi	Tomball, TX
ZIP code 77410	6.4 mi	Cypress, TX
ZIP code 77429	6.5 mi	Cypress, TX
ZIP code 77337	6.6 mi	Hufsmith, TX
ZIP code 77362	6.7 mi	Pinehurst, TX
ZIP code 77355	7.6 mi	Magnolia, TX
ZIP code 77447	7.7 mi	Hockley, TX
ZIP code 77070	8.4 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 77377, plotted from its record coordinates.

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

Scope ZIP code 77377. 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.