Somerset County is the southernmost county in the U.S. state of Maryland.As of the 2020 census, the population was 24,620, making it the second-least populous county in Maryland. The county seat is Princess Anne.. The county was named for Mary, Lady Somerset, the wife of Sir John Somerset and daughter of Thomas Arundell, 1st Baron Arundell of Wardour (c. 1560–1639).

There are twenty-four counties and Baltimore City in the U.S. state of Maryland. Though an independent city rather than a county, ... From parts of Calvert County and Charles County: Prince George of Denmark, the husband of Queen Anne of Great Britain: 863,420: 498 sq mi (1,290 km 2) Queen Anne's County: 035: Centreville: 1706: