ZIP Code 40743

40743 is one of Kentucky's ZIP codes, delivering to addresses in London, Laurel County.

City: London
County: Laurel County
State: Kentucky
Prefix: 407xx

Where this code sits

40743 is part of the 407xx range, the group of codes handled by one mail processing centre. London is served by 6 ZIP codes in total; the full list, with the county each falls in, is on the London page.

London Kentucky ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 40743 delivers to without sharing its boundary.

606 Area code 606

ZIP codes nearest 40743

The ZIP codes whose reference points sit closest to 40743.
ZIP code	Distance	Delivers to
ZIP code 40750	2.1 mi	London, KY
ZIP code 40741	3.1 mi	London, KY
ZIP code 40742	3.9 mi	London, KY
ZIP code 40745	3.9 mi	London, KY
ZIP code 40744	4.4 mi	London, KY
ZIP code 40755	4.5 mi	Pittsburg, KY
ZIP code 40740	7.6 mi	Lily, KY
ZIP code 40729	9.4 mi	East Bernstadt, 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 40743, plotted from its record coordinates.

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

Scope ZIP code 40743. 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.