<Tr> <Th> GNIS feature ID </Th> <Td> 1544587 </Td> </Tr> <Tr> <Th> Website </Th> <Td> www.greaterparkersburg.com </Td> </Tr> <P> Parkersburg is a city in and the county seat of Wood County, West Virginia, United States . Located at the confluence of the Ohio and Little Kanawha rivers, it is the state's third - largest city and the largest city in the Parkersburg - Marietta - Vienna metropolitan area . The population was 31,492 at the 2010 census . Its peak population was 44,797 in 1960 . The city is about 14 miles south of Marietta, Ohio . </P> <P> The Baltimore and Ohio Railroad reached Parkersburg in 1857, but lacked a crossing over the Ohio River until after the American Civil War . When the B&O completed the Parkersburg Bridge (CSX) 1868--1870 to Belpre, it was the longest railroad bridge in the world . </P>

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