Glastonbury is a town in Hartford County, Connecticut, United States, formally founded in 1693 and first settled in 1636. The town was named after Glastonbury in Somerset, England. Glastonbury is located on the banks of the Connecticut River, 7 mi southeast of Hartford. The town center is defined by the U.S. Census Bureau as a census-designated place (CDP). The population was 34,427 at the 2010 census.