In which county is ZIP code 43140 located?

ZIP 43140 is listed under Madison, OH.

When was this page updated?

This page was updated on 2026-01-08.

ZIP Code 43140: London, OH

ZIP: 43140

County: Madison

Coordinates: 39.90010, -83.44390

ZIP Type: Standard

Time Zone: Eastern Time (ET)

Get a reliable snapshot of the London, OH postal area 43140. This page summarizes county, coordinates, and local facts to help with services and location research.

Primary City	London
ZIP Code	43140
County	Madison
State	OH
Latitude / Longitude	39.90010, -83.44390
ZIP Type	Standard
Time Zone	Eastern Time (ET)
Data Updated	2026-01-08

Maps & Useful Links

Open in Maps: Google Maps · OpenStreetMap

These links show the approximate center point for ZIP 43140 (not an exact boundary).

Geographic & Administrative Context

Coordinates for 43140 are listed as 39.90010 / -83.44390, useful for GPS and service checks in and around London, OH.

Local Coverage Notes

ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 43140 for mail delivery and general location reference in Madison, OH.

This ZIP may extend beyond the city core into nearby communities within Madison.

Related ZIP Codes (Nearby)

Explore other postal codes near London within OH.

Frequently Asked Questions

What is the primary city for ZIP code 43140?

The primary city for this ZIP code is London, located in OH.

In which county is 43140 located?

ZIP code 43140 is situated within Madison, OH.

What are the coordinates for 43140?

The approximate center point is 39.90010 (Latitude) and -83.44390 (Longitude).

Is ZIP code 43140 active?

This page lists ZIP 43140 as Listed based on the latest refresh date shown above.

Does ZIP 43140 cover multiple areas?

Yes. Many ZIP codes cover multiple neighborhoods or nearby areas. For exact boundaries, use official mapping tools.

Methodology & Data Notes

How we build this page: We generate this page from a structured ZIP dataset and refresh key fields (city, county, and coordinates) during scheduled updates. Coordinates represent an approximate center point, not an official boundary map.
Sources: Public ZIP reference datasets and geographic coordinate references. If you use specific sources (e.g., USPS, Census), list them on your About/Methodology page.

Page updated: 2026-01-08