Demopolis is a city located in Marengo County Alabama. With a 2020 population of 6,438, it is the 89th largest city in Alabama and the 4149th largest city in the United States . Demopolis is currently declining at a rate of -1.33% annually and its population has decreased by -13.96% since the most recent census, which recorded a population of 7,483 in 2010. Demopolis reached it's highest population of 7,678 in 1980. Spanning over 18 miles, Demopolis has a population density of 363 people per square mile.
The average household income in Demopolis is $50,185 with a poverty rate of 24.73%. The median rental costs in recent years comes to $537 per month, and the median house value is $117,400. The median age in Demopolis is 38.8 years, 42.5 years for males, and 38.3 years for females.