The capital of Delaware is Dover, which has five letters. The abbreviation for Dover is DEE, which has three letters. Dover is the second-smallest state capital in the United States and is located in Kent County. It is the county seat of Kent County and the principal city of the Dover, Delaware Metropolitan Statistical Area. Dover is home to the Dover Air Force Base and the Delaware State Capitol. It is also known for its historical sites, such as the John Dickinson Plantation and the First State Heritage Park.