||Origin: The exact date and legal origin of Dorchester County are unknown, but it was in existence by February 16, 1668/69, when a writ was issued to the county sheriff by the Lord Proprietary. The County was named for the Earl of Dorset, a family friend of the Calverts.
County Seat: Cambridge , MD 21613
Form of Government: Charter, effective Dec. 5, 2002
1990 census: 30,236
2000 census: 30,674