Seabrook Island, South Carolina Population 2020

1,857

Seabrook Island is a city located in South Carolina. With a 2020 population of 1,857, it is the 125th largest city in South Carolina and the 7899th largest city in the United States. Seabrook Island is currently growing at a rate of 0.05% annually and its population has increased by 8.34% since the most recent census, which recorded a population of 1,714 in 2010. Seabrook Island reached it's highest population of 1,862 in 2017. Spanning over 7 miles, Seabrook Island has a population density of 311 people per square mile.

The average household income in Seabrook Island is $155,636 with a poverty rate of 5.61%. The median rental costs in recent years comes to $1,179 per month, and the median house value is $639,500. The median age in Seabrook Island is 67.6 years, 68 years for males, and 66.9 years for females. For every 100 females there are 91.6 males.

Seabrook Island Demographics

According to the most recent ACS, the racial composition of Seabrook Island was:

  • White: 98.35%
  • Asian: 1.18%
  • Black or African American: 0.30%
  • Native American: 0.18%
  • Native Hawaiian or Pacific Islander: 0.00%
  • Other race: 0.00%
  • Two or more races: 0.00%
The current population of Seabrook Island, South Carolina is 1,857, based on our projections of the latest US Census estimates. The US Census estimates the 2018 population at 1,855.The last official US Census in 2010 recorded the population at 1,714.

Seabrook Island, South Carolina Population 2020

Population by Race

Race Population Percentage
White1,66698.35%
Asian201.18%
Black or African American50.30%
American Indian and Alaska Native30.18%

Seabrook Island Population Pyramid 2020

Seabrook Island Median Age

67.6


Total

68


Male

66.9


Female

Seabrook Island Adults

There are 1,669 adults, (1,020 of whom are seniors) in Seabrook Island.

Seabrook Island Age Dependency

161

Age Dependency Ratio

157.2

Old Age Dependency Ratio

3.9

Child Dependency Ratio

Seabrook Island Sex Ratio

Female

884

52.18%

Male

810

47.82%

Seabrook Island Households and Families

Seabrook Island Renter vs Owner Occupied by Household Type

Seabrook Island Household Types

Type Owner Renter
Female100%0%
Male100%0%
Married96.3%3.7%
All95.6%4.4%
Non Family93.3%6.7%

95.6%

Rate of Home Ownership

Type Count Average Size Owned
All8951.8995.6
Married6732.1596.3
Non Family2091.0293.3
Male82.75100
Female52.4100

2.16

Average Family Size

1.89

Average Household Size

0.6%

Unmarried (Opposite Sex)

0%

Unmarried (Same Sex)

Seabrook Island Education

Education Attained Count Percentage
Less Than 9th Grade0.00%
9th to 12th Grade30.18%
High School Graduate1116.78%
Some College22313.62%
Associates Degree825.01%
Bachelors Degree60737.08%
Graduate Degree61137.32%

Seabrook Island Educational Attainment by Race

Name Total High School Bachelors
White1,6161,6131,207
Asian888
Hispanic55
Black55
Native American333

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

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

Name Average Male Female
Overall$56,417$83,750$42,917
Less Than High School$$$
High School Grad$$$
Some College$45,962$$26,696
Bachelors Degree$53,750$53,750$53,750
Graduate Degree$91,406$99,904$53,500

$56,417

Average Earnings

$83,750

Average Male

$42,917

Average Female

Seabrook Island Language

Seabrook Island Language by Age

Seabrook Island Language

96.73% of Seabrook Island residents speak only English, while 3.27% speak other languages. The non-English language spoken by the largest group is Other Indo-European, which is spoken by 1.90% of the population.

Seabrook Island Poverty

Seabrook Island Poverty by Race

5.61%

Overall Poverty Rate

3.58%

Male Poverty Rate

7.47%

Female Poverty Rate

Poverty in Seabrook Island

The race most likely to be in poverty in Seabrook Island is White, with 5.72% below the poverty level.

The race least likely to be in poverty in Seabrook Island is White, with 5.72% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 0.00%. Among those working part-time, it was 1.03%, and for those that did not work, the poverty rate was 8.48%.

Name Poverty
Some College14.43%
High School13.51%
Bachelors or Greater2.38%
Less Than High School0.00%
Name Poverty
Female Employed1.72%
Female Unemployed0.00%
Male Unemployed0.00%
Male Employed0.00%

Seabrook Island Income

Seabrook Island Income by Household Type

Name Median Mean
Households$106,058$155,636
Families$125,000$170,724
Married Families$122,266-
Non Families$44,688$106,111

Seabrook Island Marital Status

Seabrook Island Marital Status

Marriage Rates

84.1%

Overall Marriage Rate

86.1%

Male Marriage Rate

82.2%

Female Marriage Rate

Seabrook Island Married by Age and Sex

Seabrook 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.

Seabrook Island Marital Status by Race

Seabrook Island Veterans

240

Number of Veterans

221

Male Veterans

19

Female Veterans

War Veterans
Vietnam142
First Gulf War45
Korea27
World War II8
Second Gulf War5

$Seabrook Island Veterans by Education

5.00%

Veteran Poverty Rate

20.42%

Veteran Disability Rate

Seabrook Island Employment Status

33.8%

Labor Force Participation

32.6%

Employment Rate

3.5%

Unemployment Rate

Seabrook Island Place of Birth

Origin of Non-Citizens

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

Origin of Naturalized Citizens

6.97%

Born in South Carolina

94.92%

Native Born

5.08%

Foreign Born

1.06%

Non Citizen

Place of Birth

94.92% of Seabrook Island residents were born in the United States, with 6.97% having been born in South Carolina. 1.06% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Europe.

Year Population Growth Annual Growth Rate
20201,85710.05%
20191,85610.05%
20181,855-7-0.38%
20171,86210.05%
20161,861271.47%
20151,834291.61%
20141,805170.95%
20131,788181.02%
20121,770271.55%
20111,743261.51%
20101,7170.00%