Dillon County Demographics

A map of Dillon County's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
Black	12,608	12,709	45.3%	44.9%
White	12,398	12,987	44.5%	45.9%
Multiracial	1,303	998	4.7%	3.5%
Hispanic	979	856	3.5%	3.0%
Native American/Other	565	679	2.0%	2.4%
Asian	9	63	0.0%	0.2%

Dillon County, South Carolina has an estimated population of 27,862, a slight decrease from the 28,292 recorded in the 2020 Census. The population is 45.3% Black, 44.5% White, 4.7% Multiracial, 3.5% Hispanic, 2.0% Native American/Other, and 0.0% Asian. This demographic dot map shows the population of Dillon County, with one dot drawn for each person counted by the Census, color-coded by race.

Dillon has become slightly more racially diverse since the 2020 Census. It is more 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 Dillon County, that probability was 58.5% in 2020 and 59.3% in the most recent ACS estimates.

Dillon County is ranked the 33rd most populous county in South Carolina, out of 46 counties. Dillon County was ranked the 33rd most populous county in the 2020 Census.

Dillon County's White Population

12,398 residents of Dillon County, or 44.5% of the population, identify as White. The share of White residents in Dillon County is significantly lower than in South Carolina overall, where 61.9% of the population is White. Dillon County ranks 34th statewide in terms of White residents as a share of the population, out of 46 counties.

Since the 2020 Census, Dillon County's White population has declined by an estimated 4.5%. White residents' share of Dillon County's population has decreased from 45.9% to 44.5%.

Dillon County is more White than neighboring Marion County (38.6% White), Marlboro County (38.2% White), Robeson County (23.3% White), and Scotland County (40.1% White). Dillon County is less White than neighboring Florence County (49.1% White).

Dillon County's Black Population

12,608 residents of Dillon County, or 45.3% of the population, identify as Black. The share of Black residents in Dillon County is significantly higher than in South Carolina overall, where 24.6% of the population is Black. Dillon County ranks 12th statewide in terms of Black residents as a share of the population, out of 46 counties.

Since the 2020 Census, Dillon County's Black population has remained roughly the same. Black residents' share of Dillon County's population has remained roughly unchanged at 45.3%.

Dillon County is more Black than neighboring Robeson County (23.2% Black), Scotland County (37% Black), and Florence County (42.9% Black). Dillon County is less Black than neighboring Marion County (54.8% Black), and Marlboro County (47.7% Black).

Dillon County's Asian Population

9 residents of Dillon County, or 0.0% of the population, identify as Asian. The share of Asian residents in Dillon County is comparable to the share in South Carolina overall, where 1.7% of the population is Asian. Dillon County ranks 42nd statewide in terms of Asian residents as a share of the population, out of 46 counties.

Since the 2020 Census, Dillon County's Asian population has declined by an estimated 85.7%. Asian residents' share of Dillon County's population has remained roughly unchanged at 0.0%.

Dillon County is less Asian than neighboring Marlboro County (0.4% Asian), Robeson County (0.8% Asian), Scotland County (1.3% Asian), and Florence County (1.6% Asian).

Dillon County's Hispanic Population

979 residents of Dillon County, or 3.5% of the population, identify as Hispanic. The share of Hispanic residents in Dillon County is slightly lower than in South Carolina overall, where 7.4% of the population is Hispanic. Dillon County ranks 31st statewide in terms of Hispanic residents as a share of the population, out of 46 counties.

Since the 2020 Census, Dillon County's Hispanic population has grown by an estimated 14.4%. Hispanic residents' share of Dillon County's population has increased from 3.0% to 3.5%.

Dillon County is more Hispanic than neighboring Marion County (2.8% Hispanic), Marlboro County (2.7% Hispanic), and Florence County (3.3% Hispanic). Dillon County is less Hispanic than neighboring Robeson County (10.9% Hispanic), and Scotland County (4% Hispanic).

Dillon County's Native American/Other Population

565 residents of Dillon County, or 2.0% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Dillon County is comparable to the share in South Carolina overall, where 0.7% of the population is Native American/Other. Dillon County ranks 2nd statewide in terms of Native American/Other residents as a share of the population, out of 46 counties.

Since the 2020 Census, Dillon County's Native American/Other population has declined by an estimated 16.8%. Native American/Other residents' share of Dillon County's population has remained roughly unchanged at 2.0%.

Dillon County is more Native American/Other than neighboring Marion County (0.8% Native American/Other), and Florence County (0.5% Native American/Other). Dillon County is less Native American/Other than neighboring Marlboro County (3.7% Native American/Other), Robeson County (38.7% Native American/Other), and Scotland County (12.5% Native American/Other).

Dillon County's Multiracial Population

1,303 residents of Dillon County, or 4.7% of the population, identify as Multiracial. The share of Multiracial residents in Dillon County is comparable to the share in South Carolina overall, where 3.7% of the population is Multiracial. Dillon County ranks 20th statewide in terms of Multiracial residents as a share of the population, out of 46 counties.

Since the 2020 Census, Dillon County's Multiracial population has grown by an estimated 30.6%. Multiracial residents' share of Dillon County's population has increased from 3.5% to 4.7%.

Dillon County is more Multiracial than neighboring Marion County (3% Multiracial), Robeson County (3.2% Multiracial), and Florence County (2.5% Multiracial). Dillon County is less Multiracial than neighboring Marlboro County (7.2% Multiracial), and Scotland County (5.2% 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.