ZIP Code 40456

40456 is one of Kentucky's ZIP codes, delivering to addresses in Mount Vernon, Rockcastle County.

City: Mount Vernon
County: Rockcastle County
State: Kentucky
Prefix: 404xx

Where this code sits

40456 is part of the 404xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Mount Vernon.

Mount Vernon Kentucky ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 40456 delivers to without sharing its boundary.

606 Area code 606

ZIP codes nearest 40456

The ZIP codes whose reference points sit closest to 40456.
ZIP code	Distance	Delivers to
ZIP code 40473	0.8 mi	Renfro Valley, KY
ZIP code 40492	2.6 mi	Wildie, KY
ZIP code 40460	5.0 mi	Orlando, KY
ZIP code 40409	5.4 mi	Brodhead, KY
ZIP code 40445	8.6 mi	Livingston, KY
ZIP code 40419	9.2 mi	Crab Orchard, KY
ZIP code 40404	12 mi	Berea, KY
ZIP code 40405	13 mi	Bighill, 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 40456, plotted from its record coordinates.

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

Scope ZIP code 40456. 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.