HomeSouth CarolinaBeaufort CountyHarbor Island
Harbor Island, South Carolina: commercial real estate data.
Harbor Island is a Census CDP of 303 people across 1.02 square miles of land, in Beaufort County. Median household income is $105,425, 93.7 percent of occupied homes are owned.
Underlined figures are computed by MMCG Analytics, not published by the agency.
This is a small place, and the figures below carry wide margins.
The American Community Survey reaches Harbor Island through a sample, not a count, and in a place this size that sample is thin. The population estimate here is 303 with a margin of error of plus or minus 197, which is 65.0 percent of the estimate itself. Every figure whose margin reaches 20 percent is printed with that margin beside it, so you can see the width of each one rather than having to assume it.
Nothing has been removed or adjusted. These are the published federal estimates, shown with the uncertainty the Census publishes alongside them.
Harbor Island
What Harbor Island is
- Census place typeCDP
- Land area1.02 sq mi
- Water area0.49 sq mi
- Population per square mile of land296 plus or minus 193
- County holding the largest share of its areaBeaufort 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.
Harbor Island
How many people live in Harbor Island
- Population303 plus or minus 197
- Median age69.6
- Population under 180
- Share under 180.0 percent
- Population 65 and over232 plus or minus 145
- Share 65 and over76.6 percent plus or minus 69.0
- Households143 plus or minus 77
- Family households114 plus or minus 77
- Share of households that are families79.7 percent plus or minus 32.5
US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
Harbor Island
Income and work in Harbor Island
- Median household income$105,425
- Per capita income$41,891
- Civilian labor force45 plus or minus 29
- Employed45 plus or minus 29
- Unemployed0
- Unemployment rate0.0 percent
- Adults 25 and over300 plus or minus 197
- Adults 25 and over with a high school diploma or higher100.0 percent plus or minus 82.6
- Adults 25 and over with a bachelor degree or higher83.3 percent plus or minus 73.4
- Adults 25 and over with a graduate degree39.0 percent plus or minus 31.8
US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
Harbor Island
Housing in Harbor Island
- Housing units453 plus or minus 114
- Occupied units143 plus or minus 77
- Vacant units310 plus or minus 92
- Vacancy rate68.4 percent
- Owner occupied134 plus or minus 78
- Renter occupied9 plus or minus 10
- Ownership rate93.7 percent plus or minus 20.7
- Median owner-occupied home value$366,100 plus or minus $78,344
- Single family units326 plus or minus 113
- Share single family72.0 percent plus or minus 17.1
- Units in buildings of two or more127 plus or minus 69
- Share in buildings of two or more28.0 percent plus or minus 13.6
- Mobile homes0
- Median year structure built1995
US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
Harbor Island
How Harbor Island gets to work
- Workers 16 and over who commute33 plus or minus 24
- Commuting under 15 minutes0
- Share commuting under 15 minutes0.0 percent
- Commuting 30 minutes or more23 plus or minus 25
- Share commuting 30 minutes or more69.7 percent plus or minus 54.7
- Drove alone73.3 percent plus or minus 24.7
- Carpooled0.0 percent
- Public transport0.0 percent
- Walked0.0 percent
- Worked from home26.7 percent plus or minus 28.6
US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
Beaufort County, not Harbor Island
Beaufort County context, not Harbor Island figures
- Establishments in Beaufort County6,087
- Covered employment, Beaufort County71,044
- Average annual pay, Beaufort County$54,768
- Housing units permitted, Beaufort County1,638
Every figure in this section is published for Beaufort County as a whole and is not a measurement of Harbor Island.
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
Harbor Island questions, answered from the record.
How many people live in Harbor Island, South Carolina?
303, in 143 households. Harbor Island CDP covers 1.02 square miles of land, which is 296 people per square mile. Source: US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
What county is Harbor Island in?
Beaufort 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 Harbor Island?
$105,425. The median owner-occupied home is valued at $366,100. Source: US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
Are the county figures on this page Harbor Island figures?
No, and they are labeled so. County Business Patterns, QCEW, the Building Permits Survey, BEA product and IRS migration are published for Beaufort 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 Harbor Island.
Is zoning published for Harbor Island?
No. Nothing on this page presents parcel level zoning.