Williamsburg County Demographics

A map of Williamsburg County's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
Black	19,119	19,579	63.1%	63.1%
White	9,744	9,986	32.2%	32.2%
Hispanic	758	619	2.5%	2.0%
Multiracial	284	548	0.9%	1.8%
Asian	238	147	0.8%	0.5%
Native American/Other	139	147	0.5%	0.5%

Williamsburg County, South Carolina has an estimated population of 30,282, a slight decrease from the 31,026 recorded in the 2020 Census. The population is 63.1% Black, 32.2% White, 2.5% Hispanic, 0.9% Multiracial, 0.8% Asian, and 0.5% Native American/Other. This demographic dot map shows the population of Williamsburg County, with one dot drawn for each person counted by the Census, color-coded by race.

Williamsburg is about as racially diverse as it was in the 2020 Census. It is considerably less diverse than South Carolina overall. Demographers use a diversity index to measure the probability that two randomly selected individuals belong to different racial or ethnic groups. In Williamsburg County, that probability was 49.7% in 2020 and 49.7% in the most recent ACS estimates.

Williamsburg County is ranked the 31st most populous county in South Carolina, out of 46 counties. Williamsburg County was ranked the 30th most populous county in the 2020 Census.

Williamsburg County's White Population

9,744 residents of Williamsburg County, or 32.2% of the population, identify as White. The share of White residents in Williamsburg County is significantly lower than in South Carolina overall, where 61.9% of the population is White. Williamsburg County ranks 45th statewide in terms of White residents as a share of the population, out of 46 counties.

Since the 2020 Census, Williamsburg County's White population has declined by an estimated 2.4%. White residents' share of Williamsburg County's population has remained roughly unchanged at 32.2%.

Williamsburg County is less White than neighboring Florence County (49.1% White), Georgetown County (65.8% White), Berkeley County (60.1% White), Clarendon County (49.3% White), and Marion County (38.6% White).

Williamsburg County's Black Population

19,119 residents of Williamsburg County, or 63.1% of the population, identify as Black. The share of Black residents in Williamsburg County is significantly higher than in South Carolina overall, where 24.6% of the population is Black. Williamsburg County ranks 2nd statewide in terms of Black residents as a share of the population, out of 46 counties.

Since the 2020 Census, Williamsburg County's Black population has declined by an estimated 2.3%. Black residents' share of Williamsburg County's population has remained roughly unchanged at 63.1%.

Williamsburg County is more Black than neighboring Florence County (42.9% Black), Georgetown County (27.8% Black), Berkeley County (22.7% Black), Clarendon County (44.1% Black), and Marion County (54.8% Black).

Williamsburg County's Asian Population

238 residents of Williamsburg County, or 0.8% of the population, identify as Asian. The share of Asian residents in Williamsburg County is comparable to the share in South Carolina overall, where 1.7% of the population is Asian. Williamsburg County ranks 30th statewide in terms of Asian residents as a share of the population, out of 46 counties.

Since the 2020 Census, Williamsburg County's Asian population has grown by an estimated 61.9%. Asian residents' share of Williamsburg County's population has remained roughly unchanged at 0.8%.

Williamsburg County is more Asian than neighboring Georgetown County (0.3% Asian), and Marion County (0% Asian). Williamsburg County is less Asian than neighboring Florence County (1.6% Asian), and Berkeley County (2.5% Asian).

Williamsburg County's Hispanic Population

758 residents of Williamsburg County, or 2.5% of the population, identify as Hispanic. The share of Hispanic residents in Williamsburg County is slightly lower than in South Carolina overall, where 7.4% of the population is Hispanic. Williamsburg County ranks 41st statewide in terms of Hispanic residents as a share of the population, out of 46 counties.

Since the 2020 Census, Williamsburg County's Hispanic population has grown by an estimated 22.5%. Hispanic residents' share of Williamsburg County's population has increased from 2.0% to 2.5%.

Williamsburg County is less Hispanic than neighboring Florence County (3.3% Hispanic), Georgetown County (3.6% Hispanic), Berkeley County (9.2% Hispanic), Clarendon County (3.2% Hispanic), and Marion County (2.8% Hispanic).

Williamsburg County's Native American/Other Population

139 residents of Williamsburg County, or 0.5% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Williamsburg County is comparable to the share in South Carolina overall, where 0.7% of the population is Native American/Other. Williamsburg County ranks 39th statewide in terms of Native American/Other residents as a share of the population, out of 46 counties.

Since the 2020 Census, Williamsburg County's Native American/Other population has declined by an estimated 5.4%. Native American/Other residents' share of Williamsburg County's population has remained roughly unchanged at 0.5%.

Williamsburg County is more Native American/Other than neighboring Georgetown County (0.4% Native American/Other), and Clarendon County (0.3% Native American/Other). Williamsburg County is less Native American/Other than neighboring Berkeley County (0.9% Native American/Other), and Marion County (0.8% Native American/Other).

Williamsburg County's Multiracial Population

284 residents of Williamsburg County, or 0.9% of the population, identify as Multiracial. The share of Multiracial residents in Williamsburg County is slightly lower than in South Carolina overall, where 3.7% of the population is Multiracial. Williamsburg County ranks 45th statewide in terms of Multiracial residents as a share of the population, out of 46 counties.

Since the 2020 Census, Williamsburg County's Multiracial population has declined by an estimated 48.2%. Multiracial residents' share of Williamsburg County's population has decreased from 1.8% to 0.9%.

Williamsburg County is less Multiracial than neighboring Florence County (2.5% Multiracial), Georgetown County (2.1% Multiracial), Berkeley County (4.6% Multiracial), Clarendon County (2.3% Multiracial), and Marion County (3% Multiracial).

Sources: Most recent population estimates are from the 2020-2024 American Community Survey 5-Year Estimates. 2020 population counts and map data are from 2020 Census State Redistricting Data. Geographic data are from Census TIGER/Line Shapefiles.