| Official Name: | Seabrook |
| Settlement Type: | Census-designated place |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | South Carolina |
| Subdivision Type2: | County |
| Subdivision Name2: | Beaufort |
| Unit Pref: | Imperial |
| Area Footnotes: | [1] |
| Area Total Km2: | 16.92 |
| Area Land Km2: | 14.25 |
| Area Water Km2: | 2.66 |
| Area Total Sq Mi: | 6.53 |
| Area Land Sq Mi: | 5.50 |
| Area Water Sq Mi: | 1.03 |
| Population As Of: | 2020 |
| Population Total: | 1255 |
| Population Density Km2: | 88.05 |
| Population Density Sq Mi: | 228.06 |
| Elevation M: | 5 |
| Elevation Ft: | 17 |
| Postal Code Type: | ZIP codes |
| Postal Code: | 29940 |
| Area Code: | 843, 854 |
| Blank Name: | FIPS code |
| Blank Info: | 45-64690 |
Seabrook is an unincorporated community and census-designated place (CDP) located in Beaufort County, South Carolina, United States. It was first listed as a CDP in the 2020 census with a population of 1,255.[2]
Situated in northern part of the county along the Whale Branch River, Seabrook was founded in the late 18th century as a collection of plantations became established in the area. In the late 19th century, Seabrook became a stop on the Port Royal and Augusta Railway and featured a small, but bustling downtown area that had a federal Post Office, a general store, a gas station, and a train station. The local economy was driven by the nearby farmland. The village's old economy and markets have since yielded to development in Beaufort, though the Post Office remains to serve the village's remaining inhabitants. In the past ten years, three new public schools have opened in the Seabrook area to serve area students, including Whale Branch Early College High School.
The McLeod Farmstead was listed on the National Register of Historic Places in 1997.
| White alone (NH) | 395 | 31.47% | |
| Black or African American alone (NH) | 782 | 62.31% | |
| Native American or Alaska Native alone (NH) | 7 | 0.56% | |
| Asian alone (NH) | 7 | 0.56% | |
| Pacific Islander alone (NH) | 0 | 0.00% | |
| Some Other Race alone (NH) | 0 | 0.00% | |
| Mixed Race or Multi-Racial (NH) | 19 | 1.51% | |
| Hispanic or Latino (any race) | 45 | 3.59% | |
| Total | 1,255 | 100.00% |