Londonderry is an unincorporated community in Londonderry Township, Guernsey County, Ohio, United States. [1]
Londonderry was platted in 1815. [2] The community takes its name from Londonderry, in Northern Ireland. [3] A post office was established at Londonderry in 1819, and remained in operation until 1907. [4]
40°09′17″N 81°18′01″W / 40.15472°N 81.30028°W