Marion is a city located in Marion County South Carolina. With a 2020 population of 6,156, it is the 56th largest city in South Carolina and the 4255th largest city in the United States . Marion is currently declining at a rate of -1.36% annually and its population has decreased by -11.28% since the most recent census, which recorded a population of 6,939 in 2010. Marion reached it's highest population of in . Spanning over 4 miles, Marion has a population density of 1,393 people per square mile.
The average household income in Marion is $47,505 with a poverty rate of 24.95%. The median rental costs in recent years comes to $550 per month, and the median house value is $106,700. The median age in Marion is 35.4 years, 38.4 years for males, and 34.3 years for females.