South Carolina Voting-age Population By County in 2021 (ACS-5Yrs)

Updated on February 28, 2025.

Based on the US Census ACS-5Yrs estimates, in 2021, the voting-age population of South Carolina was 3.97M which was 78.15% of the total South Carolina population. Among all South Carolina counties, Greenville had the highest voting-age population (398.94K), followed by Charleston (325.27K), and Richland (324.94K).

On the other hand, the counties with the least voting-age population were: Allendale (6.68K), McCormick (8.47K), and Bamberg (10.82K).

The chart and table below shows the voting-age population of each county and the percentage of each county's population that are of voting-age.

You can see similar information for other states and by state for the United States.

Related Topics: South Carolina ACS-5Yrs Estimates, 2021 Topic List.

Data Source: US Census - ACS 5-Year Estimates, 2021 Census.

South Carolina Voting-age Population By County in 2021

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County	Voting-age Population	% of County Population
Abbeville	19422	79.68
Aiken	131527	78.27
Allendale	6678	80.42
Anderson	155881	77.08
Bamberg	10819	79.99
Barnwell	15838	76.14
Beaufort	151533	81.47
Berkeley	170983	76.06
Calhoun	11477	80.83
Charleston	325270	80.32
Cherokee	43243	76.94
Chester	24972	77.38
Chesterfield	33959	77.79
Clarendon	25527	80.75
Colleton	29842	77.47
Darlington	49234	77.62
Dillon	21276	74.58
Dorchester	120957	75.51
Edgefield	21302	82.13
Fairfield	17196	81.17
Florence	104568	76.17
Georgetown	51643	81.98
Greenville	398936	76.84
Greenwood	53528	77.20
Hampton	15060	78.33
Horry	283131	82.10
Jasper	22731	80.14
Kershaw	49872	76.74
Lancaster	74145	78.33
Laurens	52295	77.88
Lee	13504	80.72
Lexington	223938	76.76
McCormick	8468	88.36
Marion	22826	77.15
Marlboro	21464	79.76
Newberry	29581	78.17
Oconee	62404	80.08
Orangeburg	66139	77.89
Pickens	104992	81.00
Richland	324937	78.35
Saluda	14845	78.10
Spartanburg	247412	76.63
Sumter	80047	75.85
Union	21447	78.54
Williamsburg	24766	79.18
York	209485	75.74