ZIP Code 42078

42078 is one of Kentucky's ZIP codes, delivering to addresses in Salem, Livingston County.

City: Salem
County: Livingston County
State: Kentucky
Prefix: 420xx

Where this code sits

42078 is part of the 420xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Salem.

Salem Kentucky ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 42078 delivers to without sharing its boundary.

ZIP codes nearest 42078

The ZIP codes whose reference points sit closest to 42078.
ZIP code	Distance	Delivers to
ZIP code 42028	3.8 mi	Burna, KY
ZIP code 42047	5.8 mi	Hampton, KY
ZIP code 42081	5.9 mi	Smithland, KY
ZIP code 42083	7.6 mi	Tiline, KY
ZIP code 42037	8.2 mi	Dycusburg, KY
ZIP code 42033	10 mi	Crayne, KY
ZIP code 42064	11 mi	Marion, KY
ZIP code 62982	12 mi	Rosiclare, IL

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 42078, plotted from its record coordinates.

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

Scope ZIP code 42078. 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.