ZIP Code 40107

40107 is one of Kentucky's ZIP codes, delivering to addresses in Boston, Nelson County.

City: Boston
County: Nelson County
State: Kentucky
Prefix: 401xx

Where this code sits

40107 is part of the 401xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Boston.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 40107 delivers to without sharing its boundary.

502 Area code 502

ZIP codes nearest 40107

The ZIP codes whose reference points sit closest to 40107.
ZIP code	Distance	Delivers to
ZIP code 40051	7.2 mi	New Haven, KY
ZIP code 40004	8.7 mi	Bardstown, KY
ZIP code 40052	8.9 mi	New Hope, KY
ZIP code 40048	10 mi	Nazareth, KY
ZIP code 40150	10 mi	Lebanon Junction, KY
ZIP code 40037	12 mi	Loretto, KY
ZIP code 40049	12 mi	Nerinx, KY
ZIP code 40062	13 mi	Saint Francis, 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 40107, plotted from its record coordinates.

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

Scope ZIP code 40107. 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.