 About 10.6% of families and 14.6% of the population were below the poverty line, including 13.9% of those under age 18 and 14.0% of those age 65 or over.Dover was either named by British aristocrats in the 1830s for Dover, Kent, England or by Stephen Rye in 1832 for Dover, Tennessee.Dover was the county seat for Pope County in the 1800s.