Seabrook Island, SC Profile: Facts, Map & Data


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Seabrook Island, South Carolina - Basic Facts

The Town of Seabrook Island had a population of 1,911 as of July 1, 2017. Seabrook Island ranks in the lower quartile for Diversity Index when compared to the other cities, towns and Census Designated Places (CDPs) in South Carolina. See peer rankings below.

The primary coordinate point for Seabrook Island is located at latitude 32.5917 and longitude -80.1866 in Charleston County. 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. Charleston County is in the Eastern time zone (GMT -5). The elevation is 7 feet.

The Town of Seabrook Island (GNIS ID: 2407303) has a C1 Census Class Code which indicates an active incorporated place that does not serve as a county subdivision equivalent. It also has a Functional Status Code of "A" which identifies an active government providing primary general-purpose functions.

South Carolina is one of 20 states where Census County Divisions (CCDs) are used for statistical tracking of subdivisions within each county. The Town of Seabrook Island is located within Kiawah Island-Seabrook Island Division of Charleston County.

Beneath the boundary map are tables with Seabrook Island population, income and housing data, five-year growth projections and peer comparisons for key demographic data. The estimates are for July 1, 2017.

Neighborhood Data

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Town of Seabrook Island, SC Boundary Map

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Boundary Maps: Kiawah Island-Seabrook Island Division | Charleston County | South Carolina Counties

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Seabrook Island, SC Data & Demographics (As of July 1, 2017)


Total Population 1,911
Daytime Population: Workers 594
Daytime Population: Residents 1,258
Total Daytime Population (TDP) 1,852
Ratio TDP/Total Population1 0.97
Population in Households 1,911
Population in Familes 1,555
Population in Group Qrtrs 0
Population Density2 320
Diversity Index3 8


Median Household Income $109,861
Average Household Income $168,772
Per Capita Income $90,077


Total Housing Units 2,427 (100%)
Owner Occupied HU 915 (37.7%)
Renter Occupied HU 106 ( 4.4%)
Vacant Housing Units 1,407 (58.0%)
Median Home Value $785,428
Average Home Value $795,628


Total Households 1,020
Average Household Size 1.87
Family Households 711
Average Family Size 2
  1. If the ratio of the TDP to Total Population is greater than 1, the location gains population during the day when commuting workers are present. If the ratio is less than 1, the location is more of a bedroom community where people commute to another place for work.
  2. Population Density = Total Population per square mile.
  3. The Diversity Index is a scale of 0 to 100 that represents the likelihood 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.


2010-2017 2017-2022
Population 1.51% 1.58%
Households 1.48% 1.6%
Families 1.31% 1.47%
Median Household Income   0.21%
Per Capita Income   1.0%

Seabrook Island, SC - Peer Comparisons by Rank and Percentile

The table below compares Seabrook Island to the other 396 incorporated cities, towns and CDPs in South Carolina by rank and percentile using July 1, 2017 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 # 188 53rd
Population Density # 283 29th
Diversity Index # 392 1st
Median Household Income # 4 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.

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