Alexandria is a census-designated place and unincorporated community in Calhoun County, Alabama, United States. At the 2010 census the population was 3,917. It is included in the Anniston–Oxford, Alabama Metropolitan Statistical Area.
Alexandria is located near the center of Calhoun County at 33°45′57″N 85°53′3″W (33.766072, -85.884389). It is bordered to the south by the Saks CDP.
According to the U.S. Census Bureau, the Alexandria CDP has a total area of 11.1 square miles (28.8 km2), of which 0.012 square miles (0.03 km2), or 0.11%, is water.
Alexandria first appeared as an incorporated town on the 1880 U.S. Census, though no date of incorporation was mentioned and it did not appear again as a town after that census. It would not appear separately on the census again until it was made a census-designated place (CDP) in 2000. The precinct was also named Alexandria and first appeared on the 1870 U.S. Census. (See Alexandria Division below)
As of the census of 2010, there were 3,917 people, 1,505 households, and 1,150 families residing in Alexandria. The population density was 352 people per square mile (136.1/km2). There were 1,599 housing units at an average density of 143.6 per square mile (55.5/km2).