Glen Allen is a census-designated place (CDP) in Henrico County, Virginia, United States.

[3] Areas outside the CDP which use a "Glen Allen" mailing address include residences in neighboring Hanover County.

Its most noted resident was Captain John Cussons, a native Englishman, Confederate scout, author, and entrepreneur.

[3] The Glen Allen census-designated place is in northern Henrico County, approximately 11 miles (18 km) north-northwest of downtown Richmond.

[4] Glen Allen uses two postal addresses, ZIP codes 23059 and 23060, which cover neighboring communities as well, including rural areas of Hanover County to the north.