Beallsville /ˈbɛlzvɪl/ is a village in Monroe County, Ohio, United States. As of the 2010 census, the village population was 409.The village gained national attention by losing more than 1% of its population killed in action in the Vietnam War, the worst per-capita loss of life experienced by any place in the country.Beallsville is served by the Monroe County District Library from its administrative offices in Woodsfield, Ohio.