Seabrook Island, SC Profile: Facts, Map & Data

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Seabrook Island, South Carolina - Basic Facts

The Town of Seabrook Island is an incorporated place (Class Code P1) located in Charleston County at latitude 32.5917 and longitude -80.1866. Charleston County is in the Eastern time zone (GMT -5). The elevation is 7 feet.

The formal official name is the Town of Seabrook Island, but most people and references simply refer to it as Seabrook Island, South Carolina.

The P1 Census Class Code for Seabrook Island indicates a populated place that is also an incorporated place with the same name and the same census code. The Incorporated Place has a Functional Status Code "A" which identifies an active government providing primary general-purpose functions.

The formal boundaries for the Town of Seabrook Island (see map below) encompass a land area of 5.98 sq. miles and a water area of 1.02 sq. miles.

Town of Seabrook Island, SC Boundary Map

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Seabrook Island, SC Data & Demographics (As of July 1, 2014)


Total Population 1,806
Population in Households 1,806
Population in Familes 1,471
Population in Group Qrtrs 0
Population Density1 303
Diversity Index2 7


Total Households 970
Average Household Size 1.86
Family Households 681
Average Family Size 2


Total Housing Units 2,331 (100%)
Owner Occupied HU 862 (37.0%)
Renter Occupied HU 108 ( 4.6%)
Vacant Housing Units 1,361 (58.4%)
Median Home Value $641,939
Average Home Value $692,073


Median Household Income $103,574
Average Household Income $142,205
Per Capita Income $76,221
  (Compound Annual Growth Rates)


2010-2014 2014-2019
Population 1.24% 1.7%
Households 1.33% 1.71%
Families 1.21% 1.57%
Median Household Income   2.72%
Per Capita Income   3.86%
1) Population Density = Total Population per square mile.
2) The Diversity Index is a scale of 0 to 100 that represents the likelyhood that two persons, chosen at random from the same area, belong to different race or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.
Based on Census 2010 counts, the Diversity Index for the United States was 60.6 and it is expected to increase to 64.8 by July 1, 2018.

Seabrook Island, SC - Peer Comparisons by Rank and Percentile

The table below compares Seabrook Island to the other 395 incorporated cities, towns and CDPs in South Carolina by rank and percentile using July 1, 2014 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.

Variable Description Rank Percentile
Total Population # 192 52nd
Population Density1 # 288 27th
Diversity Index2 # 391 1st
Median Household Income # 6 99th
Per Capita Income # 2 100th

Additional comparisons and rankings can be made with a VERY EASY TO USE South Carolina Census Data Comparison Tool.