Stone Mountain is a city located in DeKalb County Georgia. With a 2020 population of 6,227, it is the 123rd largest city in Georgia and the 4229th largest city in the United States . Stone Mountain is currently declining at a rate of -0.43% annually but its population has increased by 7.33% since the most recent census, which recorded a population of 5,802 in 2010. Stone Mountain reached it's highest population of in . Spanning over 2 miles, Stone Mountain has a population density of 3,784 people per square mile.
The average household income in Stone Mountain is $53,957 with a poverty rate of 12.84%. The median rental costs in recent years comes to $1,104 per month, and the median house value is $125,000. The median age in Stone Mountain is 34.5 years, 31.9 years for males, and 36 years for females.