ZIP Code 84320

84320 is one of Utah's ZIP codes, delivering to addresses in Lewiston, Cache County.

City: Lewiston
County: Cache County
State: Utah
Prefix: 843xx

Where this code sits

84320 is part of the 843xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Lewiston.

Lewiston Utah ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 84320 delivers to without sharing its boundary.

435 Area code 435

ZIP codes nearest 84320

The ZIP codes whose reference points sit closest to 84320.
ZIP code	Distance	Delivers to
ZIP code 84333	4.6 mi	Richmond, UT
ZIP code 84338	5.1 mi	Trenton, UT
ZIP code 84308	5.3 mi	Cornish, UT
ZIP code 83237	6.1 mi	Franklin, ID
ZIP code 83286	7.1 mi	Weston, ID
ZIP code 84335	9.1 mi	Smithfield, UT
ZIP code 84327	9.5 mi	Newton, UT
ZIP code 84305	9.5 mi	Clarkston, UT

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 84320, plotted from its record coordinates.

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

Scope ZIP code 84320. 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.