Sullivan's Island

Population: 2,127
Median household income: $179,614
Median home value: $2,000,001

Sullivan's Island is a community in Charleston County, South Carolina, home to 2,127 residents. Its median household income of $179,614 runs above the Charleston County figure of $84,320.

From 2019 to 2023, Sullivan's Island's population declined 3.4% from 2,203 to 2,127, while its median home value rose 12.8% from $1,773,100 to $2,000,001.

The largest age group is 55 to 64, 19.7% of residents. White (non-Hispanic) residents are the largest group, 97.0% of the population.

Demographics

ACS 2019–2023

Population: 2,127
Median age: 52.9 yrs
Median household income: $179,614
Median home value: $2,000,001
Median gross rent: $2,402
Housing units: 1,078
Homeownership rate: 84.6%
Bachelor's degree or higher: 87.2%
Unemployment rate: 1.7%

Trends

ACS 5-year · 2019–2023

Population

2,2032,127

Median household income

$136,528$179,614

Median home value

$1,773,100$2,000,001

Median gross rent

$2,167$2,402

Year	Population	Median household income	Median home value	Median gross rent
2019	2,203	$136,528	$1,773,100	$2,167
2020	2,177	$150,000	$1,895,200	$1,896
2021	2,220	$157,743	$2,000,001	$2,313
2022	2,317	$171,838	$2,000,001	$2,321
2023	2,127	$179,614	$2,000,001	$2,402

Each year is a US Census Bureau ACS 5-year estimate ending that year.

Age distribution

Under 52.0%

5 to 1715.5%

18 to 244.2%

25 to 345.1%

35 to 4411.7%

45 to 5415.1%

55 to 6419.7%

65 to 7419.6%

75 and over7.1%

	Count	Share
Under 5	42	2.0%
5 to 17	330	15.5%
18 to 24	89	4.2%
25 to 34	108	5.1%
35 to 44	249	11.7%
45 to 54	321	15.1%
55 to 64	420	19.7%
65 to 74	417	19.6%
75 and over	151	7.1%

Race & ethnicity

	Count	Share
White (non-Hispanic)	2,063	97.0%
Black or African American	0	0.0%
American Indian & Alaska Native	0	0.0%
Asian	8	0.4%
Native Hawaiian & Pacific Islander	0	0.0%
Some other race	0	0.0%
Two or more races	12	0.6%
Hispanic or Latino (any race)	44	2.1%

Educational attainment (age 25+)

No high school diploma0.1%

High school graduate2.0%

Some college or associate's10.7%

Bachelor's degree41.2%

Graduate or professional degree45.9%

	Count	Share
No high school diploma	2	0.1%
High school graduate	34	2.0%
Some college or associate's	178	10.7%
Bachelor's degree	687	41.2%
Graduate or professional degree	765	45.9%

Commute to work

Mean travel time to work: 17 min

Drove alone81.1%

Carpooled1.4%

Public transit0.0%

Walked2.4%

Bicycle3.1%

Worked from home11.1%

Other means0.9%

How workers get to work

	Count	Share
Drove alone	917	81.1%
Carpooled	16	1.4%
Public transit	0	0.0%
Walked	27	2.4%
Bicycle	35	3.1%
Worked from home	126	11.1%
Other means	10	0.9%

Travel time

	Count	Share
Under 15 min	366	36.4%
15 to 29 min	453	45.1%
30 to 44 min	167	16.6%
45 to 59 min	8	0.8%
60+ min	11	1.1%

Households

Average household size: 2.60
Poverty rate: 8.3% (177 of 2,127)

	Count	Share
Family households	563	68.9%
Nonfamily households	254	31.1%

Housing

Median year structure built: 1984

Occupancy

	Count	Share
Occupied	817	75.8%
Vacant	261	24.2%

Tenure (of occupied units)

	Count	Share
Owner-occupied	691	84.6%
Renter-occupied	126	15.4%

1-unit, detached88.9%

1-unit, attached0.2%

2 to 4 units3.6%

5 to 19 units3.4%

20 or more units3.1%

Mobile home & other0.8%

Units in structure

	Count	Share
1-unit, detached	958	88.9%
1-unit, attached	2	0.2%
2 to 4 units	39	3.6%
5 to 19 units	37	3.4%
20 or more units	33	3.1%
Mobile home & other	9	0.8%

Geography

Place GEOID: 4570090
Type (LSAD): 43
Land area: 2.5 sq mi
Water area: 0.94 sq mi
Center point: 32.7709, -79.8311