
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 2025 population of 9,231. Seaford is currently growing at a rate of 2.76% annually and its population has increased by 15.52% since the most recent census, which recorded a population of 7,991 in 2020.
The average household income in Seaford is $66,733 with a poverty rate of 18.16%. The median age in Seaford is 41.3 years: 40.4 years for males, and 42.1 years for females.