| St. Mary's was Maryland's first county (1634). |
| Counties east of the Chesapeake Bay are known as the Eastern Shore. |
| Mount Savage in Allegany County was settled by Irish immigrants. |
| Kent county is the smallest in area. |
| The Old Order Amish live in St. Mary's County. |
| Charles, Calvert, and St. Mary's counties are often called Southern Shore. |
