what county is glen allen virginia in
Glen Allen, VA. Online Offers. Glen Allen is a census-designated place (CDP) in Henrico County, Virginia, United States. The population was 12,562 at the 2000 census. According to the United States Census Bureau, the CDP has a total area of 8.9 square miles (22.9 kmÂ²), of which, 8.9 square miles (22.9 kmÂ²) of it is land and 0.11% is water.