Decatur is a city located in Morgan County Alabama. It is also the county seat of Morgan County. With a 2020 population of 54,607, it is the 9th largest city in Alabama and the 718th largest city in the United States . Decatur is currently growing at a rate of 0.15% annually but its population has decreased by -1.93% since the most recent census, which recorded a population of 55,683 in 2010. Decatur reached it's highest population of 55,916 in 2011. Spanning over 61 miles, Decatur has a population density of 1,008 people per square mile.
The average household income in Decatur is $66,678 with a poverty rate of 17.55%. The median rental costs in recent years comes to $655 per month, and the median house value is $134,500. The median age in Decatur is 39.9 years, 38.3 years for males, and 41.5 years for females.