Kent County is a county located in the central part of the U.S. state of Delaware. As of the 2020 census, the population was 181,851, making it the least populous county in Delaware. The county seat is Dover, the state capital of Delaware. It is named for Kent, an English county. Kent County comprises the Dover metropolitan area, which is included in the Philadelphia-Reading-Camden, PA-NJ-DE-MD combined statistical area.