London Ohio ZIP Codes

London holds a single ZIP code.

Every ZIP code in London

The complete list of London, Ohio ZIP codes with the county each falls in.
ZIP code	County
43140	Madison County

We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP. USPS delivery-type products are licensed, and no clean-rights source maps ZIP codes to neighbourhoods — so the London codes above are listed without a column we would have to invent.

Scope every ZIP code recorded for London. Source GeoNames US postal codes (2026-07 postal dump) and Census 2024 county Gazetteer (2024 Gazetteer). Updated 15 July 2026. ZIP codes are delivery-route groupings, not areas; the boundaries implied by any ZIP map are approximations.

How these codes cluster

Every London ZIP code begins 431. Those first three digits identify the sectional center facility that processes mail for this part of Ohio. Statewide that range covers 49 ZIP codes, so London accounts for 2% of it.

Every Ohio ZIP prefix and the region it covers →

Area codes covering London

ZIP codes and area codes are separate systems — one routes mail, the other routes calls — and they do not share boundaries. The codes below serve the same ground London occupies.

London Ohio area codes in full →

Where London's ZIP codes sit

Each point is one London ZIP code, plotted from its record coordinates.

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

Cities near London

The closest places to London with their own ZIP code list, nearest first.
City	Distance	ZIP codes
Lafayette Ohio ZIP codes	3.8 mi	1 ZIP code
West Jefferson Ohio ZIP codes	7.9 mi	1 ZIP code
South Vienna Ohio ZIP codes	9.6 mi	1 ZIP code
South Charleston Ohio ZIP codes	12 mi	1 ZIP code
Catawba Ohio ZIP codes	12 mi	1 ZIP code
Mechanicsburg Ohio ZIP codes	14 mi	1 ZIP code
South Solon Ohio ZIP codes	14 mi	1 ZIP code
Mount Sterling Ohio ZIP codes	15 mi	1 ZIP code

Straight-line distance between place reference points, not driving distance.