Blennerhassett is a census-designated place (CDP) in Wood County, West Virginia, United States. It is part of the Parkersburg-Marietta-Vienna, WV-OH Metropolitan Statistical Area. The population was 3,118 at the 2020 census.
thumb|Blennerhassett, WV.
History
This community is named after Blennerhassett Island, an island in the Ohio River near the area. The island's name originated from the owner of the island in the 19th century: Harman Blennerhassett, an Anglo-Irish immigrant to the United States.
Geography
According to the United States Census Bureau, the CDP has a total area of 5.0 square miles (13.0 km<sup>2</sup>), all land.
Demographics
At the 2000 census,