Forestdale, AL has a population of 9,679 and is the 4,034th largest city in the United States. The population density is 1,434 per sq mi which is 1459% higher than the Alabama average and 1483% higher than the national average. The median age in Forestdale is 44 which is approximately 15% higher than the Alabama average of 39. In Forestdale, 53% of the population over 15 years of age are married, 98% speak English and 2% speak Spanish. 84% of Forestdale residents were born in Alabama, 13% were born out of state, 1% were born outside of the United States and 2% were foreign born.