Forestdale is an unincorporated community and census-designated place (CDP) in Jefferson County, Alabama, United States. It is north of the Birmingham city neighborhood of Ensley. At the 2010 census the population was 10,162.
Forestdale is located at 33°34′27″N 86°54′11″W (33.574305, -86.902937).
According to the U.S. Census Bureau, the community has a total area of 6.9 square miles (18 km2), all land.
As of the census of 2000, there were 10,509 people, 4,161 households, and 3,099 families living in the community. The population density was 1,523.0 people per square mile (588.1/km2). There were 4,357 housing units at an average density of 631.4 per square mile (243.8/km2). The racial makeup of the community was 52.87% White, 45.92% Black or African American, 0.16% Native American, 0.35% Asian, 0.17% from other races, and 0.52% from two or more races. 0.46% of the population were Hispanic or Latino of any race.
There were 4,161 households, out of which 30.6% had children under the age of 18 living with them, 58.5% were married couples living together, 13.0% had a female householder with no husband present, and 25.5% were non-families. 23.1% of all households were made up of individuals, and 11.2% had someone living alone who was 65 years of age or older.