ZIP Code 42784

42784 is one of Kentucky's ZIP codes, delivering to addresses in Upton, Hardin County.

City: Upton
County: Hardin County
State: Kentucky
Prefix: 427xx

Where this code sits

42784 is part of the 427xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Upton.

Upton Kentucky ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 42784 delivers to without sharing its boundary.

ZIP codes nearest 42784

The ZIP codes whose reference points sit closest to 42784.
ZIP code	Distance	Delivers to
ZIP code 42776	4.6 mi	Sonora, KY
ZIP code 42713	5.8 mi	Bonnieville, KY
ZIP code 42788	9.4 mi	White Mills, KY
ZIP code 42757	10 mi	Magnolia, KY
ZIP code 42740	10 mi	Glendale, KY
ZIP code 42765	12 mi	Munfordville, KY
ZIP code 42716	12 mi	Buffalo, KY
ZIP code 42748	13 mi	Hodgenville, KY

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 42784, plotted from its record coordinates.

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

Scope ZIP code 42784. 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.