South Carolina 2020 Census Total Population By County

The total population of South Carolina from the 2020 Census was 5,118,425, based on data from the US Census Bureau.

Greenville County was the most populated county (525,534), followed by Richland County (416,147), and then Charleston County (408,235). On the other hand, the 3 counties that were least populated include: Allendale County (8,039), McCormick County (9,526), and Bamberg County (13,311).

You can also see this information for other states and also for the national level by state.

Hover over or click on the counties to see the number and percentage of South Carolina population that lives in each county. The data can also be found in a table below. You can use the table to sort, filter, and explore the data further.