ZIP Code 40243

40243 is one of Kentucky's ZIP codes, delivering to addresses in Louisville, Jefferson County.

City: Louisville
County: Jefferson County
State: Kentucky
Prefix: 402xx

Where this code sits

40243 is part of the 402xx range, the group of codes handled by one mail processing centre. Louisville is served by 66 ZIP codes in total; the full list, with the county each falls in, is on the Louisville page.

Louisville Kentucky ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 40243 delivers to without sharing its boundary.

502 Area code 502

ZIP codes nearest 40243

The ZIP codes whose reference points sit closest to 40243.
ZIP code	Distance	Delivers to
ZIP code 40223	2.0 mi	Louisville, KY
ZIP code 40245	3.3 mi	Louisville, KY
ZIP code 40242	4.1 mi	Louisville, KY
ZIP code 40018	4.4 mi	Eastwood, KY
ZIP code 40299	4.6 mi	Louisville, KY
ZIP code 40241	5.0 mi	Louisville, KY
ZIP code 40222	5.1 mi	Louisville, KY
ZIP code 40056	5.1 mi	Pewee Valley, 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 40243, plotted from its record coordinates.

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

Scope ZIP code 40243. 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.