Londonderry is an unincorporated community in eastern Liberty Township, Ross County, Ohio, United States.
[1] It has a post office with the ZIP code 45647.
[3] A post office was established under the name Gillespieville in 1833, and the name was changed to Londonderry in 1929.
[4] The present name is derived from Londonderry, Northern Ireland, the native home of a first settler.
This Ross County, Ohio state location article is a stub.