Glen Allen is a census-designated place in Henrico County, Virginia, United States. The population was 14,774 at the 2010 census.GeographyAccording to the United States Census Bureau, the CDP has a total area of 8.9 square miles (22.9 km²), of which 8.9 square miles (22.9 km²) is land and 0.11% is water.Glen Allen is located north and west of the city of Richmond. As Richmond has expanded, Glen Allen has become a suburb of Richmond. A large area of northern and western Henrico County, from the Goochland County line north of Broad Street to the neighborhoods surrounding the Virginia Center Commons mall off U.S. Route 1, has a Glen Allen postal address (ZIP codes 23059 and 23060), however the actual Glen Allen CDP is a much smaller area, near the intersection of Warren Road and Mountain Road.DemographicsAs of the census of 2000, there were 12,562 people, 5,131 households, and 3,504 families residing in the CDP. The population density was 1,420.1 people per square mile (548.0/km²). There were 5,297 housing units at an average density of 598.8/sq mi (231.1/km²). The racial makeup of the CDP was 74.9% White, 19.5% African American, 0.4% Native American, 3.2% Asian, 0.1% Pacific Islander, 0.8% from other races, and 1.2% from two or more races. Hispanic or Latino of any race were 1.7% of the population.