ZIP Code 75640

75640 is one of Texas's ZIP codes, delivering to addresses in Diana, Upshur County.

City: Diana
County: Upshur County
State: Texas
Prefix: 756xx

Where this code sits

75640 is part of the 756xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Diana.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 75640 delivers to without sharing its boundary.

ZIP codes nearest 75640

The ZIP codes whose reference points sit closest to 75640.
ZIP code	Distance	Delivers to
ZIP code 75683	3.0 mi	Ore City, TX
ZIP code 75630	9.0 mi	Avinger, TX
ZIP code 75668	11 mi	Lone Star, TX
ZIP code 75660	13 mi	Judson, TX
ZIP code 75645	14 mi	Gilmer, TX
ZIP code 75605	16 mi	Longview, TX
ZIP code 75651	16 mi	Harleton, TX
ZIP code 75644	16 mi	Gilmer, 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 75640, plotted from its record coordinates.

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

Scope ZIP code 75640. 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.