| Sea Level Township | NE Carteret County on Nelson Bay and Core Sound. |
| Sea of Rawnocke | See Albemarle Sound. |
| Seaboard | town in N Northampton County. Alt. 126. Settled about 1750 and known first as Concord. Inc. 1877. Named for the Seaboard Air Line Railroad. Post office since 1853. |
| Seaboard Township | N central Northampton County. |
| Seaforth | community in E Chatham County. The site is now under the waters of Jordan Lake. |
| Seagate | community in E New Hanover County on the S side of Bradleys Creek. Alt. 10. Served by post office, 1910-32. Settled about 1890. Named for the fact that it is located on an inlet of Wrightsville Sound, with access thereby to the sea. |
| Seago's Lake | E Anson County SE of Lilesville. Covers approx. 10 acres; max. depth 20 ft. Formed early in the twentieth century when gravel was removed from the site. Named for owner. |
| Seagrove | town in S Randolph County. Inc. 1913. Named for a railroad official. Alt. 716. Post office since 1897. Home to North Carolina Pottery Center. |
| Seagull | community on Currituck Banks, E Currituck County. A lifesaving station there originally was called Old Currituck Inlet. A Coast Guard station there was decommissioned following World War II. Post office operated from 1908 to 1924. |
| Sealevel | community in NE Carteret County on Core Sound. |