Sullivan's Island, SC Demographics

A map of Sullivan's Island's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	2,014	1,770	96.5%	93.6%
Hispanic	55	47	2.6%	2.5%
Multiracial	10	50	0.5%	2.6%
Black	8	7	0.4%	0.4%
Asian	0	16	0.0%	0.8%
Native American/Other	0	1	0.0%	0.1%

Sullivan's Island, South Carolina has an estimated population of 2,087, a large increase from the 1,891 recorded in the 2020 Census. The population is 96.5% White, 2.6% Hispanic, 0.5% Multiracial, 0.4% Black, 0.0% Asian, and 0.0% Native American/Other. This demographic dot map shows the population of Sullivan's Island, with one dot drawn for each person counted by the Census, color-coded by race.

Sullivan's Island has become considerably less racially diverse since 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 Sullivan's Island, that probability was 12.3% in 2020 and 6.8% in the most recent ACS estimates.

Sullivan's Island is ranked the 190th most populous place in South Carolina, out of 475 places. This ranking is based on the Census definition of a place, which includes incorporated places like cities, towns, and villages, as well as unincorporated census-designated places (CDPs). Sullivan's Island was ranked the 198th most populous place in the 2020 Census.

Sullivan's Island's White Population

2,014 residents of Sullivan's Island, or 96.5% of the population, identify as White. The share of White residents in Sullivan's Island is significantly higher than in South Carolina overall, where 61.9% of the population is White. Sullivan's Island ranks 16th statewide in terms of White residents as a share of the population, out of 475 places.

Since the 2020 Census, Sullivan's Island's White population has grown by an estimated 13.8%. White residents' share of Sullivan's Island's population has increased from 93.6% to 96.5%.

Sullivan's Island is more White than neighboring Mount Pleasant (89.5% White), James Island (81.3% White), Charleston (71.7% White), and Folly Beach (96.3% White). Sullivan's Island is less White than neighboring Isle of Palms (98.9% White).

Sullivan's Island's Black Population

8 residents of Sullivan's Island, or 0.4% of the population, identify as Black. The share of Black residents in Sullivan's Island is significantly lower than in South Carolina overall, where 24.6% of the population is Black. Sullivan's Island ranks 459th statewide in terms of Black residents as a share of the population, out of 475 places.

Since the 2020 Census, Sullivan's Island's Black population has grown by an estimated 14.3%. Black residents' share of Sullivan's Island's population has remained roughly unchanged at 0.4%.

Sullivan's Island is more Black than neighboring Isle of Palms (0% Black), and Folly Beach (0% Black). Sullivan's Island is less Black than neighboring Mount Pleasant (2.7% Black), James Island (12.7% Black), and Charleston (15.8% Black).

Sullivan's Island's Asian Population

0 residents of Sullivan's Island, or 0.0% of the population, identify as Asian. The share of Asian residents in Sullivan's Island is comparable to the share in South Carolina overall, where 1.7% of the population is Asian. Sullivan's Island ranks 157th statewide in terms of Asian residents as a share of the population, out of 475 places.

Since the 2020 Census, Sullivan's Island's Asian population has declined by an estimated 100.0%. Asian residents' share of Sullivan's Island's population has decreased from 0.8% to 0.0%.

Sullivan's Island is less Asian than neighboring Mount Pleasant (1.6% Asian), James Island (0.6% Asian), and Charleston (1.9% Asian).

Sullivan's Island's Hispanic Population

55 residents of Sullivan's Island, or 2.6% of the population, identify as Hispanic. The share of Hispanic residents in Sullivan's Island is slightly lower than in South Carolina overall, where 7.4% of the population is Hispanic. Sullivan's Island ranks 298th statewide in terms of Hispanic residents as a share of the population, out of 475 places.

Since the 2020 Census, Sullivan's Island's Hispanic population has grown by an estimated 17.0%. Hispanic residents' share of Sullivan's Island's population has remained roughly unchanged at 2.6%.

Sullivan's Island is more Hispanic than neighboring Isle of Palms (0.3% Hispanic), James Island (2.1% Hispanic), and Folly Beach (0% Hispanic). Sullivan's Island is less Hispanic than neighboring Mount Pleasant (2.8% Hispanic), and Charleston (6.1% Hispanic).

Sullivan's Island's Native American/Other Population

0 residents of Sullivan's Island, or 0.0% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Sullivan's Island is comparable to the share in South Carolina overall, where 0.7% of the population is Native American/Other. Sullivan's Island ranks 419th statewide in terms of Native American/Other residents as a share of the population, out of 475 places.

Since the 2020 Census, Sullivan's Island's Native American/Other population has declined by an estimated 100.0%. Native American/Other residents' share of Sullivan's Island's population has remained roughly unchanged at 0.0%.

Sullivan's Island is less Native American/Other than neighboring Mount Pleasant (0.4% Native American/Other), James Island (0.1% Native American/Other), Charleston (0.6% Native American/Other), and Folly Beach (1.4% Native American/Other).

Sullivan's Island's Multiracial Population

10 residents of Sullivan's Island, or 0.5% of the population, identify as Multiracial. The share of Multiracial residents in Sullivan's Island is slightly lower than in South Carolina overall, where 3.7% of the population is Multiracial. Sullivan's Island ranks 340th statewide in terms of Multiracial residents as a share of the population, out of 475 places.

Since the 2020 Census, Sullivan's Island's Multiracial population has declined by an estimated 80.0%. Multiracial residents' share of Sullivan's Island's population has decreased from 2.6% to 0.5%.

Sullivan's Island is less Multiracial than neighboring Mount Pleasant (3% Multiracial), Isle of Palms (0.8% Multiracial), James Island (3.1% Multiracial), Charleston (4% Multiracial), and Folly Beach (2.3% 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.