ZIP Code 40078

40078 is one of Kentucky's ZIP codes, delivering to addresses in Willisburg, Washington County.

City: Willisburg
County: Washington County
State: Kentucky
Prefix: 400xx

Where this code sits

40078 is part of the 400xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Willisburg.

Willisburg Kentucky ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 40078 delivers to without sharing its boundary.

859 Area code 859

ZIP codes nearest 40078

The ZIP codes whose reference points sit closest to 40078.
ZIP code	Distance	Delivers to
ZIP code 40061	5.6 mi	Saint Catharine, KY
ZIP code 40012	5.7 mi	Chaplin, KY
ZIP code 40040	7.0 mi	Mackville, KY
ZIP code 40069	8.2 mi	Springfield, KY
ZIP code 40008	9.5 mi	Bloomfield, KY
ZIP code 40046	14 mi	Mount Eden, KY
ZIP code 40020	15 mi	Fairfield, KY
ZIP code 40330	15 mi	Harrodsburg, 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 40078, plotted from its record coordinates.

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

Scope ZIP code 40078. 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.