Charleston County Demographics

A map of Charleston County's Population by Race

Charleston County, South Carolina had a population of 408,235 in 2020. It was 64.6% White, 22.5% Black, 1.8% Asian, 7.2% Hispanic, 0.7% Native American/Other, and 3.3% Multiracial. This map presents the population of Charleston County, with one dot drawn for each person counted in the 2020 Census, color-coded by race.

Charleston County is the 3rd most populous county of the 46 counties in South Carolina.

Charleston County's White Population

263,560 residents of Charleston County identify as White, or 64.6%. This makes the White share of the population of Charleston County roughly similar to the White share of the population of South Carolina (62.1% White). Of the 46 counties in South Carolina, Charleston County is ranked #16 in terms of White residents as a share of the population.

Charleston County is more White than neighboring Berkeley County (60% White), Dorchester County (61.4% White), Colleton County (56.5% White), and Williamsburg County (32.2% White). Charleston County is less White than neighboring Georgetown County (65% White).

Charleston County's Black Population

91,746 residents of Charleston County identify as Black, or 22.5%. This makes the Black share of the population of Charleston County roughly similar to the Black share of the population of South Carolina (24.8% Black). Of the 46 counties in South Carolina, Charleston County is ranked #34 in terms of Black residents as a share of the population.

Charleston County is less Black than neighboring Dorchester County (23.7% Black), Colleton County (34.7% Black), Williamsburg County (63.1% Black), and Georgetown County (28.5% Black).

Charleston County's Asian Population

7,461 residents of Charleston County identify as Asian, or 1.8%. This makes the Asian share of the population of Charleston County roughly similar to the Asian share of the population of South Carolina (1.7% Asian). Of the 46 counties in South Carolina, Charleston County is ranked #10 in terms of Asian residents as a share of the population.

Charleston County is more Asian than neighboring Colleton County (0.5% Asian), Williamsburg County (0.5% Asian), and Georgetown County (0.4% Asian). Charleston County is less Asian than neighboring Berkeley County (2.3% Asian), and Dorchester County (2% Asian).

Charleston County's Hispanic Population

29,280 residents of Charleston County identify as Hispanic, or 7.2%. This makes the Hispanic share of the population of Charleston County roughly similar to the Hispanic share of the population of South Carolina (6.9% Hispanic). Of the 46 counties in South Carolina, Charleston County is ranked #9 in terms of Hispanic residents as a share of the population.

Charleston County is more Hispanic than neighboring Dorchester County (6.7% Hispanic), Colleton County (3.6% Hispanic), Williamsburg County (2% Hispanic), and Georgetown County (3.5% Hispanic). Charleston County is less Hispanic than neighboring Berkeley County (8.8% Hispanic).

Charleston County's Native American/Other Population

2,709 residents of Charleston County identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other, or 0.7%. This makes the Native American/Other share of the population of Charleston County roughly similar to the Native American/Other share of the population of South Carolina (0.8% Native American/Other). Of the 46 counties in South Carolina, Charleston County is ranked #18 in terms of Native American/Other residents as a share of the population.

Charleston County is more Native American/Other than neighboring Williamsburg County (0.5% Native American/Other), and Georgetown County (0.4% Native American/Other). Charleston County is less Native American/Other than neighboring Berkeley County (1.3% Native American/Other), Dorchester County (1.2% Native American/Other), and Colleton County (1.1% Native American/Other).

Charleston County's Multiracial Population

13,479 residents of Charleston County identify as Multiracial, or 3.3%. This makes the Multiracial share of the population of Charleston County roughly similar to the Multiracial share of the population of South Carolina (3.7% Multiracial). Of the 46 counties in South Carolina, Charleston County is ranked #24 in terms of Multiracial residents as a share of the population.

Charleston County is more Multiracial than neighboring Williamsburg County (1.8% Multiracial), and Georgetown County (2.2% Multiracial). Charleston County is less Multiracial than neighboring Berkeley County (5.1% Multiracial), Dorchester County (5% Multiracial), and Colleton County (3.6% Multiracial).

Source: 2020 Census State Redistricting Data and Census TIGER/Line Shapefiles.