Seaford is a somewhat small city located in the state of Delaware. With a population of 8,516 people and six associated neighborhoods, Seaford is the tenth largest community in Delaware. Much of the housing stock in Seaford was built relatively recently. The construction of new real estate can often be taken as an indication that the local Seaford economy is robust, and that jobs or other amenities are attracting an influx of new residents. This seems to be the case in Seaford, where the median household income is $49,469.00.

The percentage of adults in Seaford with college degrees is slightly lower than the national average of 21.84% for all communities. 15.45% of adults in Seaford have a bachelor's degree or advanced degree.

The per capita income in Seaford in 2022 was $26,952, which is lower middle income relative to Delaware and the nation. This equates to an annual income of $107,808 for a family of four. However, Seaford contains both very wealthy and poor people as well.

Seaford is an extremely ethnically-diverse city. The people who call Seaford home describe themselves as belonging to a variety of racial and ethnic groups. The greatest number of Seaford residents report their race to be White, followed by Black or African-American. Important ancestries of people in Seaford include Irish, English, German, Haitian, and Italian.

The most common language spoken in Seaford is English. Other important languages spoken here include French and French Creole.