unincorporated community
An unincorporated area is a parcel of land that is not governed by a local general-purpose municipal corporation. (At p. 178.) They may be governed or serviced by an encompassing unit (such as a county) or another branch of the state (such as th ...
and
census-designated place
A census-designated place (CDP) is a Place (United States Census Bureau), concentration of population defined by the United States Census Bureau for statistical purposes only.
CDPs have been used in each decennial census since 1980 as the counte ...
in
Hanover Township, Columbiana County, Ohio
Hanover Township is one of the eighteen civil township, townships of Columbiana County, Ohio, Columbiana County, Ohio, United States. The 2020 United States Census, 2020 census reported 3,459 people living in the township.
Hanover Township is h ...
, United States. It surrounds the eponymous Guilford Lake reservoir. The population was 1,188 at the 2020 census.
History
Guilford Lake was constructed as a canal feeder reservoir for the Sandy and Beaver Canal in 1834. It took its name from Edward H. Gill, chief engineer of the canal company. When the canal era ended, local farmers breached the dam, drained the lake, and used the fertile lake bottom for farm land. In 1932, a new dam was completed and the land surrounding it was designated a state park in 1949. The community was first listed as a CDP for the 2020 census.