South Carolina Citizen Population By County in 2020 (ACS-5Yrs)

Updated on March 28, 2026.

Based on the US Census Bureau's special tabulation from the ACS 5-year estimates, in 2020, the citizen population for South Carolina was 4,942,660 and represented 97.08% of the total South Carolina population.

Among all South Carolina counties, Greenville had the highest citizen population (490.00K), followed by Richland (401.72K), and Charleston (394.06K).

In terms of percentages, Fairfield had the highest percentage of its population being citizens (99.78%), followed by Union (99.63%), and Orangeburg (99.48%).

The chart and table below shows the citizen population of each county and the percentage of each county's population that were citizens.

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

You may also be interested in:
South Carolina Citizen Voting-age Population By County in 2020

Data Source: US Census - ACS 5-Year (CVAP).

See this for other years:

South Carolina Citizen Population By County in 2020

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County	Citizen Population	% of County Population
Greenville	489995	94.94
Richland	401715	96.88
Charleston	394060	96.69
Horry	331665	96.36
Spartanburg	302780	96.49
Lexington	286025	96.95
York	264910	96.72
Berkeley	216245	97.36
Anderson	196885	98.35
Beaufort	181250	95.53
Aiken	166035	97.70
Dorchester	156570	97.06
Florence	136060	98.43
Pickens	122755	97.91
Sumter	105305	98.72
Lancaster	92460	96.94
Orangeburg	86500	99.48
Oconee	76705	97.94
Greenwood	68340	96.70
Darlington	66295	99.16
Laurens	65825	98.26
Kershaw	65115	98.77
Georgetown	61220	98.50
Cherokee	56135	98.29
Chesterfield	45070	98.33
Newberry	36880	96.22
Colleton	36815	97.85
Clarendon	33430	98.72
Chester	32090	99.47
Marion	30600	98.85
Williamsburg	30445	98.82
Dillon	30310	99.46
Jasper	27460	92.90
Union	27225	99.63
Edgefield	26265	97.21
Marlboro	26130	99.07
Abbeville	24420	99.35
Fairfield	22355	99.78
Barnwell	20865	98.56
Saluda	19040	93.84
Hampton	18845	98.02
Lee	17040	99.39
Calhoun	14460	98.97
Bamberg	13965	98.10
McCormick	9445	99.47
Allendale	8650	98.41