Seaford
- County:
- Sussex County
- County Seat:
- No
- Area (mi²):
- 5.104
- State:
- Delaware
Seaford is a city located in Sussex County, Delaware. Seaford has a 2026 population of 8,952. Seaford is currently growing at a rate of 2.45% annually and its population has increased by 12.15% since the most recent census, which recorded a population of 7,982 in 2020.