Dorchester County Demographics

A map of Dorchester County's Population by Race

Dorchester County, South Carolina had a population of 161,540 in 2020. It was 61.4% White, 23.7% Black, 2.0% Asian, 6.7% Hispanic, 1.2% Native American/Other, and 5.0% Multiracial. This map presents the population of Dorchester County, with one dot drawn for each person counted in the 2020 Census, color-coded by race.

Dorchester County is the 12th most populous county of the 46 counties in South Carolina.

Dorchester County's White Population

99,145 residents of Dorchester County identify as White, or 61.4%. This makes the White share of the population of Dorchester County roughly similar to the White share of the population of South Carolina (62.1% White). Of the 46 counties in South Carolina, Dorchester County is ranked #19 in terms of White residents as a share of the population.

Dorchester County is more White than neighboring Colleton County (56.5% White), Berkeley County (60% White), Orangeburg County (33% White), and Clarendon County (49.2% White). Dorchester County is less White than neighboring Charleston County (64.6% White).

Dorchester County's Black Population

38,278 residents of Dorchester County identify as Black, or 23.7%. This makes the Black share of the population of Dorchester County roughly similar to the Black share of the population of South Carolina (24.8% Black). Of the 46 counties in South Carolina, Dorchester County is ranked #29 in terms of Black residents as a share of the population.

Dorchester County is more Black than neighboring Berkeley County (22.5% Black), and Charleston County (22.5% Black). Dorchester County is less Black than neighboring Colleton County (34.7% Black), Orangeburg County (60.3% Black), and Clarendon County (44.4% Black).

Dorchester County's Asian Population

3,286 residents of Dorchester County identify as Asian, or 2.0%. This makes the Asian share of the population of Dorchester County roughly similar to the Asian share of the population of South Carolina (1.7% Asian). Of the 46 counties in South Carolina, Dorchester County is ranked #8 in terms of Asian residents as a share of the population.

Dorchester County is more Asian than neighboring Colleton County (0.5% Asian), Orangeburg County (1.1% Asian), Charleston County (1.8% Asian), and Clarendon County (0.7% Asian). Dorchester County is less Asian than neighboring Berkeley County (2.3% Asian).

Dorchester County's Hispanic Population

10,861 residents of Dorchester County identify as Hispanic, or 6.7%. This makes the Hispanic share of the population of Dorchester County roughly similar to the Hispanic share of the population of South Carolina (6.9% Hispanic). Of the 46 counties in South Carolina, Dorchester County is ranked #13 in terms of Hispanic residents as a share of the population.

Dorchester County is more Hispanic than neighboring Colleton County (3.6% Hispanic), Orangeburg County (2.3% Hispanic), and Clarendon County (2.9% Hispanic). Dorchester County is less Hispanic than neighboring Berkeley County (8.8% Hispanic), and Charleston County (7.2% Hispanic).

Dorchester County's Native American/Other Population

1,878 residents of Dorchester County identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other, or 1.2%. This makes the Native American/Other share of the population of Dorchester 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, Dorchester County is ranked #4 in terms of Native American/Other residents as a share of the population.

Dorchester County is more Native American/Other than neighboring Colleton County (1.1% Native American/Other), Orangeburg County (0.8% Native American/Other), Charleston County (0.7% Native American/Other), and Clarendon County (0.6% Native American/Other). Dorchester County is less Native American/Other than neighboring Berkeley County (1.3% Native American/Other).

Dorchester County's Multiracial Population

8,092 residents of Dorchester County identify as Multiracial, or 5.0%. This makes the Multiracial share of the population of Dorchester County roughly similar to the Multiracial share of the population of South Carolina (3.7% Multiracial). Of the 46 counties in South Carolina, Dorchester County is ranked #2 in terms of Multiracial residents as a share of the population.

Dorchester County is more Multiracial than neighboring Colleton County (3.6% Multiracial), Orangeburg County (2.5% Multiracial), Charleston County (3.3% Multiracial), and Clarendon County (2.2% Multiracial). Dorchester County is less Multiracial than neighboring Berkeley County (5.1% Multiracial).

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