Fastest Growing Counties in South Carolina (2025)

County
Rank
Change (2020)
2025 Pop.
2020 Pop.
Jasper County125.76%36,66029,150
Horry County220.46%426,140353,765
Lancaster County319.27%115,19796,588
Berkeley County419.1%275,747231,533
Spartanburg County514.82%378,198329,379
Kershaw County612.84%74,01565,590
Edgefield County712.59%28,90325,671
Greenville County89.7%578,418527,249
Dorchester County99.48%177,399162,043
Beaufort County108.96%204,643187,815
McCormick County118.65%10,3419,518
Aiken County128.14%182,934169,168
York County137.93%306,558284,028
Lexington County147.91%318,374295,047
Anderson County157.7%219,924204,195
Georgetown County166.84%67,85563,509
Charleston County175.98%434,401409,899
Pickens County185.97%139,545131,684
Oconee County195.79%83,34378,784
Newberry County205.6%39,84537,731
Laurens County214.56%70,71767,634
Richland County224.02%432,362415,671
Chesterfield County233.13%44,61143,256
Saluda County243.04%19,40118,828
Cherokee County252.99%57,90056,220
Colleton County262.4%39,46238,537
Abbeville County271.48%24,62624,266
Chester County281.26%32,69232,284
Clarendon County291.03%31,15830,841
Florence County300.98%138,162136,817
Greenwood County310.78%69,93469,390
Calhoun County320.35%14,16414,114
Darlington County33-0.75%62,37662,848
Sumter County34-0.81%104,623105,476
Barnwell County35-0.91%20,39920,586
Marion County36-1.73%28,58229,086
Bamberg County37-1.79%13,02213,260
Orangeburg County38-2.02%82,25883,954
Hampton County39-2.27%18,09418,515
Dillon County40-2.39%27,60028,277
Fairfield County41-2.49%20,36620,887
Union County42-2.84%26,40927,181
Williamsburg County43-4.75%29,44730,914
Marlboro County44-5.25%25,10026,490
Lee County45-5.8%15,57916,539
Allendale County46-8.36%7,2717,934

South Carolina County Growth Overview

South Carolina's counties show varied growth patterns from 2020 to 2025. Jasper County leads with 25.76% annualized growth, followed by Horry County (20.46%) and Lancaster County (19.27%). The largest counties are Greenville County (578,418), Charleston County (434,401), and Richland County (432,362). Of the 46 counties in South Carolina, 32 are growing while 14 have experienced population decline. Overall, counties averaged 4.51% annualized growth, with total population growing by 8.23% annually.