HomeSouth CarolinaCharleston CountySeabrook Island
Seabrook Island, South Carolina: commercial real estate data.
Seabrook Island is a Census town of 2,204 people across 5.94 square miles of land, in Charleston County. Median household income is $127,500, 95.8 percent of occupied homes are owned.
Underlined figures are computed by MMCG Analytics, not published by the agency.
Seabrook Island
What Seabrook Island is
- Census place typetown
- Land area5.94 sq mi
- Water area1.12 sq mi
- Population per square mile of land371
- County holding the largest share of its areaCharleston County, 100.0 percent
US Census Bureau, cartographic boundary file, places, 2024 vintage. US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
Seabrook Island
How many people live in Seabrook Island
- Population2,204
- Median age68.9
- Population under 187 plus or minus 17
- Share under 180.3 percent plus or minus 0.8
- Population 65 and over1,399
- Share 65 and over63.5 percent
- Households1,250
- Family households899
- Share of households that are families71.9 percent
US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
Seabrook Island
Income and work in Seabrook Island
- Median household income$127,500 plus or minus $27,323
- Per capita income$132,020
- Civilian labor force751
- Employed751
- Unemployed0
- Unemployment rate0.0 percent
- Adults 25 and over2,195
- Adults 25 and over with a high school diploma or higher99.6 percent
- Adults 25 and over with a bachelor degree or higher78.4 percent
- Adults 25 and over with a graduate degree38.1 percent
US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
Seabrook Island
Housing in Seabrook Island
- Housing units2,574
- Occupied units1,250
- Vacant units1,324
- Vacancy rate51.4 percent
- Owner occupied1,197
- Renter occupied53 plus or minus 33
- Ownership rate95.8 percent
- Median owner-occupied home value$1,001,400
- Median gross rent, monthly$3,501
- Annual rent as a share of median income33.0 percent
- Single family units1,857
- Share single family72.1 percent
- Units in buildings of two or more717 plus or minus 177
- Share in buildings of two or more27.9 percent plus or minus 6.4
- Mobile homes0
- Median year structure built1988
US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
Seabrook Island
How Seabrook Island gets to work
- Workers 16 and over who commute406 plus or minus 119
- Commuting under 15 minutes141 plus or minus 53
- Share commuting under 15 minutes34.7 percent plus or minus 8.1
- Commuting 30 minutes or more169 plus or minus 91
- Share commuting 30 minutes or more41.6 percent plus or minus 18.7
- Drove alone47.4 percent plus or minus 12.3
- Carpooled2.4 percent plus or minus 2.2
- Public transport0.0 percent
- Walked2.3 percent plus or minus 2.5
- Worked from home45.4 percent
US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
Seabrook Island
Flood risk in Seabrook Island
- NFIP communityTown of Seabrook Island
- NFIP community number450256
- Participating in the NFIPYes
- Community Rating System classClass 5
- Currently effective map date01/29/21
The Town of Seabrook Island participates in the National Flood Insurance Program as community 450256 and carries Community Rating System class 5, a flood insurance premium discount for policies written there.
Federal Emergency Management Agency, NFIP Community Status Book (OpenFEMA), as of 2026-09-26.
Charleston County, not Seabrook Island
Charleston County context, not Seabrook Island figures
- Establishments in Charleston County15,801
- Covered employment, Charleston County278,476
- Average annual pay, Charleston County$68,271
- Housing units permitted, Charleston County4,153
Every figure in this section is published for Charleston County as a whole and is not a measurement of Seabrook Island.
All Charleston County figures →
US Census Bureau, County Business Patterns, 2023. US Bureau of Labor Statistics, Quarterly Census of Employment and Wages, 2024 annual averages. US Census Bureau, Building Permits Survey, 2024 annual.
Coverage
What this page does not hold.
Parcel detail, zoning and the flood zone at an address are not on this page; they resolve at the address in the platform. How this page was built →
Common questions
Seabrook Island questions, answered from the record.
How many people live in Seabrook Island, South Carolina?
2,204, in 1,250 households. Seabrook Island town covers 5.94 square miles of land, which is 371 people per square mile. Source: US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
What county is Seabrook Island in?
Charleston County, which holds 100.0 percent of the place by area. Source: US Census Bureau, cartographic boundary file, places, 2024 vintage.
What is the median household income in Seabrook Island?
$127,500. The median owner-occupied home is valued at $1,001,400. Median gross rent is $3,501 per month. Source: US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
Is Seabrook Island in the National Flood Insurance Program?
Yes. Seabrook Island appears in the FEMA Community Status Book as Seabrook Island, town of, community 450256, carrying Community Rating System class 5, which is a premium discount for exceeding the program minimum. Whether a specific parcel sits in a mapped special flood hazard area is an address level question the platform answers.
Are the county figures on this page Seabrook Island figures?
No, and they are labeled so. County Business Patterns, QCEW, the Building Permits Survey, BEA product and IRS migration are published for Charleston County as a whole and there is no place level equivalent. They appear in one clearly marked section as context and are never presented as measurements of Seabrook Island.
Is zoning published for Seabrook Island?
No. Nothing on this page presents parcel level zoning.