ZIP Code 42539

42539 is one of Kentucky's ZIP codes, delivering to addresses in Liberty, Casey County.

City: Liberty
County: Casey County
State: Kentucky
Prefix: 425xx

Where this code sits

42539 is part of the 425xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Liberty.

Liberty Kentucky ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 42539 delivers to without sharing its boundary.

606 Area code 606

ZIP codes nearest 42539

The ZIP codes whose reference points sit closest to 42539.
ZIP code	Distance	Delivers to
ZIP code 42541	8.3 mi	Middleburg, KY
ZIP code 42528	8.6 mi	Dunnville, KY
ZIP code 42566	8.8 mi	Yosemite, KY
ZIP code 40437	12 mi	Hustonville, KY
ZIP code 42565	12 mi	Windsor, KY
ZIP code 42733	12 mi	Elk Horn, KY
ZIP code 42753	12 mi	Knifley, KY
ZIP code 42758	13 mi	Mannsville, 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 42539, plotted from its record coordinates.

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

Scope ZIP code 42539. 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.