The 2016 Sumter, South Carolina, population is 40,816. There are 1,264 people per square mile (population density).
The median age is 33.8. The US median is 37.4. 44.35% of people in Sumter, South Carolina, are married. 10.80% are divorced.
The average household size is 2.45 people. 26.09% of people are married, with children. 24.57% have children, but are single.
44.64% of people are white, 47.81% are black, 1.56% are asian, 0.13% are native american, and 0.00% claim 'Other'.
4.14% of the people in Sumter, South Carolina, claim hispanic ethnicity (meaning 95.87% are non-hispanic).
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