Sullivan's Island, South Carolina Population 2021

1,924
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Sullivan's Island is a city located in South Carolina. With a 2020 population of 1,924, it is the 119th largest city in South Carolina and the 7750th largest city in the United States . Sullivan's Island is currently declining at a rate of 0.00% annually and its population has increased by 7.43% since the most recent census, which recorded a population of 1,791 in 2010. Sullivan's Island reached it's highest population of in . Spanning over 3 miles, Sullivan's Island has a population density of 770 people per square mile.

The average household income in Sullivan's Island is $244,808 with a poverty rate of 8.18%. The median rental costs in recent years comes to $2,167 per month, and the median house value is $1.77 Mn. The median age in Sullivan's Island is 47.9 years, 44.6 years for males, and 50.2 years for females.

Sullivan's Island Demographics

According to the most recent ACS, the racial composition of Sullivan's Islandwas:

  • White: 97.32%
  • Asian: 1.18%
  • Two or more races: 1.00%
  • Other race: 0.27%
  • Black or African American: 0.23%
  • Native American: 0.00%
  • Native Hawaiian or Pacific Islander: 0.00%
The current population of Sullivan's Island, South Carolina is 1,924 based on our projections of the latest US Census estimates. The US Census estimates the 2018 population at 1,924.The last official US Census in 2010 recorded the population at 1,791.

Sullivan's Island, South Carolina Population 2021

Population by Race

Race Population Percentage
White2,14497.32%
Asian261.18%
Two or More Races221.00%
Some Other Race60.27%
Black or African American50.23%
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Sullivan's Island Population by Race

Sullivan's Island Population Pyramid $2021

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Sullivan's Island Median Age

47.9


Total

44.6


Male

50.2


Female

Sullivan's Island Adults

There are 1,760 adults, (422 of whom are seniors) in Sullivan's Island.

Sullivan's Island Age Dependency

64.6

Age Dependency Ratio

31.5

Old Age Dependency Ratio

33.1

Child Dependency Ratio

Sullivan's Island Sex Ratio

Female

1,109

50.34%

Male

1,094

49.66%

Sullivan's Island Population by Age

Sullivan's Island Renter vs Owner Occupied by Household Type

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Sullivan's Island Household Types

Type Owner Renter
Male70.6%29.4%
Female72%28%
Non Family72.3%27.7%
All82.7%17.3%
Married88.8%11.2%

82.7%

Rate of Home Ownership

Sullivan's Island Households and Families

Type Count Average Size Owned
All8212.6882.7
Married5203.0888.8
Non Family2021.5772.3
Female822.8372
Male173.1270.6

2.98

Average Family Size

2.68

Average Household Size

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Sullivan's Island Households by Type

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Education Attained Count Percentage
Less Than 9th Grade0.00%
9th to 12th Grade0.00%
High School Graduate664.17%
Some College1559.80%
Associates Degree392.47%
Bachelors Degree69243.74%
Graduate Degree63039.82%
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Sullivan's Island Educational Attainment by Sex (over 25)

Sullivan's Island Educational Attainment by Race

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Race Total High School Bachelors
White1,5201,5201,263
Hispanic252522
Asian191919
2+ Races131313
Black555
Other Race33

The highest rate of high school graduation is among white people with a rate of 100.00%.

The highest rate of bachelors degrees is among black people with a rate of 100.00%.

Sullivan's Island Educational Attainment by Race

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Name Average Male Female
Overall$71,250$108,393$38,828
Less Than 9th Grade$$$
High School Graduate$94,583$$
Some College$40,750$57,750$
Bachelors Degree$49,583$80,625$30,114
Graduate Degree$104,688$181,528$55,000

$71,250

Average Earnings

$108,393

Average Male

$38,828

Average Female

Sullivan's Island Earnings by Educational Attainment

Sullivan's Island Language by Age

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Sullivan's Island Language

96.58% of Sullivan's Island residents speak only English, while 3.42% speak other languages. The non-English language spoken by the largest group is Other Indo-European, which is spoken by 2.17% of the population.

Sullivan's Island Language

Sullivan's Island Poverty by Race

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8.18%

Overall Poverty Rate

9.11%

Male Poverty Rate

7.26%

Female Poverty Rate

Poverty in Sullivan's Island

The race most likely to be in poverty in Sullivan's Island is White, with 8.49% below the poverty level.

The race least likely to be in poverty in Sullivan's Island is White, with 8.49% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 3.83%. Among those working part-time, it was 4.03%, and for those that did not work, the poverty rate was 15.30%.

Sullivan's Island Poverty

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Name Poverty
Some College7.22%
Bachelors or Greater5.22%
High School0.00%
Less Than 9th GradeNaN%

Sullivan's Island Poverty Rate by Education

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Rate Poverty
Male Unemployed48.94%
Female Employed3.57%
Male Employed1.71%
Female Unemployed0.00%

Sullivan's Island Poverty Rate by Employment Status and Sex

Sullivan's Island Income by Household Type

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Name Median Mean
Households$136,528$244,808
Families$173,438$292,315
Married Families$199,500-
Non Families$58,333$96,345
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Income by Household Type

Sullivan's Island Marital Status

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Marriage Rates

56.7%

Overall Marriage Rate

58.1%

Male Marriage Rate

55.4%

Female Marriage Rate

Sullivan's Island Married by Age and Sex

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Sullivan's Island Marriage

The age group where males are most likely to be married is Over 65, while the female age group most likely to be married is 45-54.

Sullivan's Island Marital Status by Race

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Sullivan's Island Marital Status

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109

Number of Veterans

107

Male Veterans

2

Female Veterans

War Veterans
Vietnam73
First Gulf War27
Second Gulf War14
World War II5
Korea

Sullivan's Island Veterans by War

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Age Group Veterans
75+41
65 to 7441
55 to 6418
35 to 547
18 to 342

Sullivan's Island Veterans by Age

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Name Veterans % of Total
White1056.10%
Asian421.05%

Sullivan's Island Veterans by Race

Sullivan's Island Veterans by Education

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5.50%

Veteran Poverty Rate

6.42%

Veteran Disability Rate

Sullivan's Island Veterans by Education

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59.4%

Labor Force Participation

55.9%

Employment Rate

6%

Unemployment Rate

Sullivan's Island Employment by Age

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Sullivan's Island Employment by Race

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Sullivan's Island Employment by Education

Origin of Non-Citizens

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Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.

Origin of Naturalized Citizens

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41.40%

Born in Sullivan's Island

95.82%

Native Born

4.18%

Foreign Born

1.72%

Non Citizen

2.45%

Naturalized

Place of Birth

95.82% of Sullivan's Island residents were born in the United States, with 41.40% having been born in South Carolina. 1.72% of residents are not US citizens. Of those not born in the United States, the largest percentage are from North America.

Sullivan's Island Place of Birth

Note: 2020 and 2021 data is projected
Year Population Growth Annual Growth Rate
20211,9240.00%
20201,9240.00%
20191,9240.00%
20181,924-3-0.16%
20171,92710.05%
20161,926211.10%
20151,905231.22%
20141,882201.07%
20131,862261.42%
20121,836170.93%
20111,819261.45%
20101,7930.00%

Sullivan's Island Population by Year