ZIP Code 40906

40906 is one of Kentucky's ZIP codes, delivering to addresses in Barbourville, Knox County.

City: Barbourville
County: Knox County
State: Kentucky
Prefix: 409xx

Where this code sits

40906 is part of the 409xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Barbourville.

Barbourville Kentucky ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 40906 delivers to without sharing its boundary.

606 Area code 606

ZIP codes nearest 40906

The ZIP codes whose reference points sit closest to 40906.
ZIP code	Distance	Delivers to
ZIP code 40949	1.9 mi	Heidrick, KY
ZIP code 40946	3.3 mi	Green Road, KY
ZIP code 40915	3.6 mi	Bimble, KY
ZIP code 40903	3.6 mi	Artemus, KY
ZIP code 40923	4.2 mi	Cannon, KY
ZIP code 40921	6.6 mi	Bryants Store, KY
ZIP code 40953	6.7 mi	Hinkle, KY
ZIP code 40935	7.1 mi	Flat Lick, 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 40906, plotted from its record coordinates.

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

Scope ZIP code 40906. 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.