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Population of Counties in South Carolina (2024)

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2024 Population
Growth Since 2020
Area (mi²)
Density (/mi²)
Greenville County568,2277.77%303723Greenville County location
Charleston County429,3844.75%354468Charleston County location
Richland County428,7503.15%292566Richland County location
Horry County411,80916.41%437363Horry County location
Spartanburg County367,44811.56%312455Spartanburg County location
Lexington County313,9516.41%270449Lexington County location
York County302,4396.48%263444York County location
Berkeley County265,48214.66%426240Berkeley County location
Anderson County216,5006.03%276303Anderson County location
Beaufort County201,8117.45%222350Beaufort County location
Aiken County180,0326.42%413168Aiken County location
Dorchester County173,6167.14%219306Dorchester County location
Florence County137,6880.64%309172Florence County location
Pickens County137,5204.43%192277Pickens County location
Lancaster County111,70615.65%212203Lancaster County location
Sumter County104,394-1.03%257157Sumter County location
Orangeburg County82,539-1.69%42775Orangeburg County location
Oconee County82,2824.44%242131Oconee County location
Kershaw County71,9609.71%28199Kershaw County location
Laurens County69,7953.2%27598Laurens County location
Greenwood County69,6970.44%176153Greenwood County location
Georgetown County66,7935.17%31482Georgetown County location
Darlington County62,396-0.72%217111Darlington County location
Cherokee County57,3071.93%152146Cherokee County location
Chesterfield County44,3212.46%30855Chesterfield County location
Newberry County39,3354.25%24362Newberry County location
Colleton County39,1681.64%40837Colleton County location
Jasper County35,10220.42%25354Jasper County location
Chester County32,4590.54%22456Chester County location
Clarendon County31,0810.78%23451Clarendon County location
Williamsburg County29,669-4.03%36132Williamsburg County location
Marion County28,545-1.86%18958Marion County location
Edgefield County28,25510.07%19356Edgefield County location
Dillon County27,649-2.22%15668Dillon County location
Union County26,519-2.44%19852Union County location
Marlboro County25,402-4.11%18553Marlboro County location
Abbeville County24,5301.09%19050Abbeville County location
Barnwell County20,423-0.79%21237Barnwell County location
Fairfield County20,394-2.36%26530Fairfield County location
Saluda County19,2622.31%17543Saluda County location
Hampton County18,108-2.2%21632Hampton County location
Lee County15,773-4.63%15838Lee County location
Calhoun County14,1750.43%14737Calhoun County location
Bamberg County12,998-1.98%15233Bamberg County location
McCormick County10,1416.55%13928McCormick County location
Allendale County7,320-7.74%15718Allendale County location
showing: 46 rows

There are 46 counties in South Carolina. As of 2019, South Carolina's most populous county is Greenville County, home of Greenville, with a population of 506,837. This represents growth of 11.95% since the last census. Greenville is followed by Richland County (411,592), Charleston County (401,438), Horry County (333,268), and Spartansburg County (306,854). These are the only counties of South Carolina with a population of more than 300,000 and all have experienced population growth of at least 6%. Of these counties, Horry County has experienced the most rapid growth of 23.23% since the census.

South Carolina Counties with Fewest Residents

The least populated county in South Carolina is Allendale County with a population of 9,002, down 13.02% from the 2010 census. McCormick County follows closely behind at 9,545 residents which represents a population growth of -6.54%. Other small counties in South Carolina with fewer than 15,000 people are Bamberg County (14,381) and Calhoun County (14,704). Both counties have also experienced negative population growth. All six counties in South Carolina with fewer than 20,000 residents have declined in population since the census.

South Carolina Counties with Rapid Growth

Horry County, the 4th most populated county in South Carolina, has experienced the most rapid growth since the census at 23.23% to a population of 333,268. Two other counties topped 20% growth: Berkeley County (21.77%) and Lancaster County (20.24%). Only five other counties experienced growth above 12%: York County (17.44%), Beaufort County (14.74%), Charleston County (14.36%), Jasper County (14.15%), and Dorchester County (13.81%).

Lists of Counties in all States

  1. South Carolina Revenue and Fiscal Affairs Office
  2. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  3. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  4. American Community Survey (2009 - 2013)
  5. Census QuickFacts
  6. Historical Populations of States and Counties (1790 - 1990)