Barnwell County Demographics

A map of Barnwell County's Population by Race

Barnwell County, South Carolina had a population of 20,589 in 2020. It was 50.3% White, 42.7% Black, 0.8% Asian, 2.5% Hispanic, 0.6% Native American/Other, and 3.1% Multiracial. This map presents the population of Barnwell County, with one dot drawn for each person counted in the 2020 Census, color-coded by race.

Barnwell County is the 39th most populous county of the 46 counties in South Carolina.

Barnwell County's White Population

10,352 residents of Barnwell County identify as White, or 50.3%. This makes the White share of the population of Barnwell County slightly less than the White share of the population of South Carolina (62.1% White). Of the 46 counties in South Carolina, Barnwell County is ranked #32 in terms of White residents as a share of the population.

Barnwell County is more White than neighboring Allendale County (24.7% White), Bamberg County (37.6% White), and Hampton County (42% White). Barnwell County is less White than neighboring Aiken County (63.9% White), and Screven County (57% White).

Barnwell County's Black Population

8,785 residents of Barnwell County identify as Black, or 42.7%. This makes the Black share of the population of Barnwell County larger than the Black share of the population of South Carolina (24.8% Black). Of the 46 counties in South Carolina, Barnwell County is ranked #14 in terms of Black residents as a share of the population.

Barnwell County is more Black than neighboring Aiken County (23.4% Black), and Screven County (37.6% Black). Barnwell County is less Black than neighboring Allendale County (70.2% Black), Bamberg County (58.2% Black), and Hampton County (51.4% Black).

Barnwell County's Asian Population

161 residents of Barnwell County identify as Asian, or 0.8%. This makes the Asian share of the population of Barnwell County roughly similar to the Asian share of the population of South Carolina (1.7% Asian). Of the 46 counties in South Carolina, Barnwell County is ranked #19 in terms of Asian residents as a share of the population.

Barnwell County is more Asian than neighboring Allendale County (0.2% Asian), Bamberg County (0.5% Asian), Screven County (0.4% Asian), and Hampton County (0.5% Asian). Barnwell County is less Asian than neighboring Aiken County (1.1% Asian).

Barnwell County's Hispanic Population

520 residents of Barnwell County identify as Hispanic, or 2.5%. This makes the Hispanic share of the population of Barnwell County roughly similar to the Hispanic share of the population of South Carolina (6.9% Hispanic). Of the 46 counties in South Carolina, Barnwell County is ranked #33 in terms of Hispanic residents as a share of the population.

Barnwell County is more Hispanic than neighboring Allendale County (2.4% Hispanic), Bamberg County (1.1% Hispanic), and Screven County (2% Hispanic). Barnwell County is less Hispanic than neighboring Aiken County (6.8% Hispanic), and Hampton County (3.6% Hispanic).

Barnwell County's Native American/Other Population

133 residents of Barnwell County identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other, or 0.6%. This makes the Native American/Other share of the population of Barnwell 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, Barnwell County is ranked #22 in terms of Native American/Other residents as a share of the population.

Barnwell County is more Native American/Other than neighboring Bamberg County (0.5% Native American/Other), Screven County (0.5% Native American/Other), and Hampton County (0.5% Native American/Other). Barnwell County is less Native American/Other than neighboring Allendale County (0.7% Native American/Other), and Aiken County (0.8% Native American/Other).

Barnwell County's Multiracial Population

638 residents of Barnwell County identify as Multiracial, or 3.1%. This makes the Multiracial share of the population of Barnwell County roughly similar to the Multiracial share of the population of South Carolina (3.7% Multiracial). Of the 46 counties in South Carolina, Barnwell County is ranked #28 in terms of Multiracial residents as a share of the population.

Barnwell County is more Multiracial than neighboring Allendale County (1.7% Multiracial), Bamberg County (2.1% Multiracial), Screven County (2.4% Multiracial), and Hampton County (1.9% Multiracial). Barnwell County is less Multiracial than neighboring Aiken County (4% Multiracial).

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