ZIP Code 43140

43140 is one of Ohio's ZIP codes, delivering to addresses in London, Madison County.

City: London
County: Madison County
State: Ohio
Prefix: 431xx

Where this code sits

43140 is part of the 431xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to London.

London Ohio ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 43140 delivers to without sharing its boundary.

ZIP codes nearest 43140

The ZIP codes whose reference points sit closest to 43140.
ZIP code	Distance	Delivers to
ZIP code 43162	8.9 mi	West Jefferson, OH
ZIP code 45369	9.7 mi	South Vienna, OH
ZIP code 43010	12 mi	Catawba, OH
ZIP code 43151	12 mi	Sedalia, OH
ZIP code 45368	12 mi	South Charleston, OH
ZIP code 43044	13 mi	Mechanicsburg, OH
ZIP code 43153	14 mi	South Solon, OH
ZIP code 43119	14 mi	Galloway, OH

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 43140, plotted from its record coordinates.

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

Scope ZIP code 43140. 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.