The 2016 Simpsonville, South Carolina, population is 20,736. There are 2,455 people per square mile (population density).
The median age is 39. The US median is 37.4. 57.58% of people in Simpsonville, South Carolina, are married. 12.35% are divorced.
The average household size is 2.57 people. 32.00% of people are married, with children. 13.62% have children, but are single.
67.86% of people are white, 18.64% are black, 2.02% are asian, 0.21% are native american, and 0.02% claim 'Other'.
10.74% of the people in Simpsonville, South Carolina, claim hispanic ethnicity (meaning 89.26% are non-hispanic).
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