MARYLAND: Click this link to see all slave labor sites in the state.

  • Statehood: 1776
  • COUNTIES: Click one of the counties below to see all plantations/ workplaces in that county.
County Year Est. Details
Allegany 1789 from Washington Co.
Anne Arundel 1650
Baltimore 1659
Baltimore City 1729 from Baltimore Co.
Calvert 1654 Patuxent Co. renamed Calvert Co. in 1654
Caroline 1773 from Dorchester and Queen Anne’s Counties
Carroll 1837 from Baltimore and Frederick Counties
Cecil 1674 from Baltimore and Kent Counties
Charles 1658
Dorchester 1668
Frederick 1748 from Prince George’s Co.
Garrett 1872 from Allegany Co. (last county to be formed in Maryland)
Harford 1773 from Baltimore Co.
Howard 1851 from Anne Arundel and Baltimore Counties
Kent 1642
Montgomery 1776 from Frederick Co.
Prince George’s 1695 from Charles and Calvert Counties
Queen Anne’s 1706 from Talbot Co.
St. Mary’s 1637
Somerset 1666
Talbot 1662 from Kent Co.
Washington 1776 from Frederick Co.
Wicomico 1867 from Somerset and Worcester Counties
Worcester 1742 from Somerset Co.