ZIP Code 40109

40109 is one of Kentucky's ZIP codes, delivering to addresses in Brooks, Bullitt County.

City: Brooks
County: Bullitt County
State: Kentucky
Prefix: 401xx

Where this code sits

40109 is part of the 401xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Brooks.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 40109 delivers to without sharing its boundary.

502 Area code 502

ZIP codes nearest 40109

The ZIP codes whose reference points sit closest to 40109.
ZIP code	Distance	Delivers to
ZIP code 40118	3.8 mi	Fairdale, KY
ZIP code 40272	4.8 mi	Louisville, KY
ZIP code 40129	5.3 mi	Hillview, KY
ZIP code 40166	5.5 mi	Shepherdsville, KY
ZIP code 40165	5.7 mi	Shepherdsville, KY
ZIP code 40229	6.8 mi	Louisville, KY
ZIP code 40219	7.1 mi	Louisville, KY
ZIP code 40214	7.2 mi	Louisville, 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 40109, plotted from its record coordinates.

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

Scope ZIP code 40109. 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.