Aiken County Demographics

A map of Aiken County's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	110,667	107,918	63.5%	63.9%
Black	41,210	39,465	23.7%	23.4%
Hispanic	12,577	11,526	7.2%	6.8%
Multiracial	6,983	6,831	4.0%	4.0%
Asian	1,625	1,773	0.9%	1.1%
Native American/Other	1,098	1,295	0.6%	0.8%

Aiken County, South Carolina has an estimated population of 174,160, an increase from the 168,808 recorded in the 2020 Census. The population is 63.5% White, 23.7% Black, 7.2% Hispanic, 4.0% Multiracial, 0.9% Asian, and 0.6% Native American/Other. This demographic dot map shows the population of Aiken County, with one dot drawn for each person counted by the Census, color-coded by race.

Aiken is about as racially diverse as it was in the 2020 Census. It is 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 Aiken County, that probability was 53.0% in 2020 and 53.3% in the most recent ACS estimates.

Aiken County is ranked the 11th most populous county in South Carolina, out of 46 counties. Aiken County was ranked the 11th most populous county in the 2020 Census.

Aiken County's White Population

110,667 residents of Aiken County, or 63.5% of the population, identify as White. The share of White residents in Aiken County is comparable to the share in South Carolina overall, where 61.9% of the population is White. Aiken County ranks 17th statewide in terms of White residents as a share of the population, out of 46 counties.

Since the 2020 Census, Aiken County's White population has grown by an estimated 2.5%. White residents' share of Aiken County's population has remained roughly unchanged at 63.5%.

Aiken County is more White than neighboring Barnwell County (50.5% White), Edgefield County (56.5% White), Saluda County (57.1% White), and Richmond County (31.4% White). Aiken County is less White than neighboring Lexington County (70.3% White).

Aiken County's Black Population

41,210 residents of Aiken County, or 23.7% of the population, identify as Black. The share of Black residents in Aiken County is comparable to the share in South Carolina overall, where 24.6% of the population is Black. Aiken County ranks 31st statewide in terms of Black residents as a share of the population, out of 46 counties.

Since the 2020 Census, Aiken County's Black population has grown by an estimated 4.4%. Black residents' share of Aiken County's population has remained roughly unchanged at 23.7%.

Aiken County is more Black than neighboring Saluda County (21.2% Black), and Lexington County (15.1% Black). Aiken County is less Black than neighboring Barnwell County (42.8% Black), Edgefield County (30.1% Black), and Richmond County (55.7% Black).

Aiken County's Asian Population

1,625 residents of Aiken County, or 0.9% of the population, identify as Asian. The share of Asian residents in Aiken County is comparable to the share in South Carolina overall, where 1.7% of the population is Asian. Aiken County ranks 17th statewide in terms of Asian residents as a share of the population, out of 46 counties.

Since the 2020 Census, Aiken County's Asian population has declined by an estimated 8.3%. Asian residents' share of Aiken County's population has remained roughly unchanged at 0.9%.

Aiken County is more Asian than neighboring Barnwell County (0.6% Asian), Edgefield County (0.3% Asian), and Saluda County (0.4% Asian). Aiken County is less Asian than neighboring Richmond County (1.6% Asian), and Lexington County (2.2% Asian).

Aiken County's Hispanic Population

12,577 residents of Aiken County, or 7.2% of the population, identify as Hispanic. The share of Hispanic residents in Aiken County is comparable to the share in South Carolina overall, where 7.4% of the population is Hispanic. Aiken County ranks 12th statewide in terms of Hispanic residents as a share of the population, out of 46 counties.

Since the 2020 Census, Aiken County's Hispanic population has grown by an estimated 9.1%. Hispanic residents' share of Aiken County's population has remained roughly unchanged at 7.2%.

Aiken County is more Hispanic than neighboring Barnwell County (2.9% Hispanic), and Richmond County (5.8% Hispanic). Aiken County is less Hispanic than neighboring Saluda County (17.1% Hispanic), and Lexington County (7.9% Hispanic).

Aiken County's Native American/Other Population

1,098 residents of Aiken County, or 0.6% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Aiken County is comparable to the share in South Carolina overall, where 0.7% of the population is Native American/Other. Aiken County ranks 10th statewide in terms of Native American/Other residents as a share of the population, out of 46 counties.

Since the 2020 Census, Aiken County's Native American/Other population has declined by an estimated 15.2%. Native American/Other residents' share of Aiken County's population has remained roughly unchanged at 0.6%.

Aiken County is less Native American/Other than neighboring Edgefield County (0.8% Native American/Other), Saluda County (1.1% Native American/Other), Richmond County (0.8% Native American/Other), and Lexington County (0.7% Native American/Other).

Aiken County's Multiracial Population

6,983 residents of Aiken County, or 4.0% of the population, identify as Multiracial. The share of Multiracial residents in Aiken County is comparable to the share in South Carolina overall, where 3.7% of the population is Multiracial. Aiken County ranks 7th statewide in terms of Multiracial residents as a share of the population, out of 46 counties.

Since the 2020 Census, Aiken County's Multiracial population has grown by an estimated 2.2%. Multiracial residents' share of Aiken County's population has remained roughly unchanged at 4.0%.

Aiken County is more Multiracial than neighboring Barnwell County (2.7% Multiracial), Saluda County (3% Multiracial), and Lexington County (3.8% Multiracial). Aiken County is less Multiracial than neighboring Edgefield County (5% Multiracial), and Richmond County (4.7% 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.