Harbor Island, SC Demographics

A map of Harbor Island's Population by Race

Harbor Island, South Carolina has an estimated population of 303, a dramatic increase from the 209 recorded in the 2020 Census. The population is 97.4% White, 2.6% Multiracial, 0.0% Black, 0.0% Asian, 0.0% Hispanic, and 0.0% Native American/Other. This demographic dot map shows the population of Harbor Island, with one dot drawn for each person counted by the Census, color-coded by race.

Harbor 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 Harbor Island, that probability was 22.9% in 2020 and 5.1% in the most recent ACS estimates.

Harbor Island is ranked the 380th 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). Harbor Island was ranked the 397th most populous place in the 2020 Census.

Harbor Island's White Population

295 residents of Harbor Island, or 97.4% of the population, identify as White. The share of White residents in Harbor Island is significantly higher than in South Carolina overall, where 61.9% of the population is White. Harbor Island ranks 50th statewide in terms of White residents as a share of the population, out of 475 places.

Since the 2020 Census, Harbor Island's White population has grown by an estimated 61.2%. White residents' share of Harbor Island's population has increased from 87.6% to 97.4%.

Harbor Island is more White than neighboring Fripp Island (94.8% White), Port Royal (56.8% White), Beaufort (62.6% White), and Dale (9.7% White). Harbor Island is less White than neighboring Edisto Beach (98% White).

Harbor Island's Black Population

0 residents of Harbor Island, or 0.0% of the population, identify as Black. The share of Black residents in Harbor Island is significantly lower than in South Carolina overall, where 24.6% of the population is Black. Harbor Island ranks 431st statewide in terms of Black residents as a share of the population, out of 475 places.

Since the 2020 Census, Harbor Island's Black population has declined by an estimated 100.0%. Black residents' share of Harbor Island's population has decreased from 2.9% to 0.0%.

Harbor Island is less Black than neighboring Edisto Beach (0.1% Black), Port Royal (13.6% Black), Beaufort (26% Black), and Dale (87.3% Black).

Harbor Island's Asian Population

0 residents of Harbor Island, or 0.0% of the population, identify as Asian. The share of Asian residents in Harbor Island is comparable to the share in South Carolina overall, where 1.7% of the population is Asian. Harbor Island ranks 359th statewide in terms of Asian residents as a share of the population, out of 475 places.

Since the 2020 Census, Harbor Island's Asian population has grown from 0 to an estimated 0. Asian residents' share of Harbor Island's population has remained roughly unchanged at 0.0%.

Harbor Island is less Asian than neighboring Fripp Island (0.8% Asian), Edisto Beach (0.5% Asian), Port Royal (2.1% Asian), and Beaufort (0.9% Asian).

Harbor Island's Hispanic Population

0 residents of Harbor Island, or 0.0% of the population, identify as Hispanic. The share of Hispanic residents in Harbor Island is lower than in South Carolina overall, where 7.4% of the population is Hispanic. Harbor Island ranks 345th statewide in terms of Hispanic residents as a share of the population, out of 475 places.

Since the 2020 Census, Harbor Island's Hispanic population has declined by an estimated 100.0%. Hispanic residents' share of Harbor Island's population has decreased from 1.9% to 0.0%.

Harbor Island is less Hispanic than neighboring Fripp Island (1.6% Hispanic), Edisto Beach (0.5% Hispanic), Port Royal (21.4% Hispanic), and Beaufort (7.4% Hispanic).

Harbor Island's Native American/Other Population

0 residents of Harbor 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 Harbor Island is comparable to the share in South Carolina overall, where 0.7% of the population is Native American/Other. Harbor Island ranks 17th statewide in terms of Native American/Other residents as a share of the population, out of 475 places.

Since the 2020 Census, Harbor Island's Native American/Other population has declined by an estimated 100.0%. Native American/Other residents' share of Harbor Island's population has decreased from 2.9% to 0.0%.

Harbor Island is less Native American/Other than neighboring Port Royal (0.3% Native American/Other), and Beaufort (0.4% Native American/Other).

Harbor Island's Multiracial Population

8 residents of Harbor Island, or 2.6% of the population, identify as Multiracial. The share of Multiracial residents in Harbor Island is comparable to the share in South Carolina overall, where 3.7% of the population is Multiracial. Harbor Island ranks 86th statewide in terms of Multiracial residents as a share of the population, out of 475 places.

Since the 2020 Census, Harbor Island's Multiracial population has declined by an estimated 20.0%. Multiracial residents' share of Harbor Island's population has decreased from 4.8% to 2.6%.

Harbor Island is more Multiracial than neighboring Edisto Beach (0.9% Multiracial). Harbor Island is less Multiracial than neighboring Fripp Island (2.8% Multiracial), Port Royal (5.8% Multiracial), Beaufort (2.8% Multiracial), and Dale (2.9% 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.