There are a total of 23 counties in the state of Maryland. Among them, Saint Mary’s County is the oldest one (established in 1637) while Garrett County is the youngest (established in 1872). With population of 1,004,709, Montgomery County is the most populated. The biggest county by land area is Worcester County (1,800 km2) and the smallest is Baltimore City (238 km2). Below please see all Maryland counties which are listed in alphabetical order.
- Allegany County, MD
- Anne Arundel County, MD
- Baltimore County, MD
- Calvert County, MD
- Caroline County, MD
- Carroll County, MD
- Cecil County, MD
- Charles County, MD
- Dorchester County, MD
- Frederick County, MD
- Garrett County, MD
- Harford County, MD
- Howard County, MD
- Kent County, MD
- Montgomery County, MD
- Prince George’s County, MD
- Queen Anne’s County, MD
- Saint Mary’s County, MD
- Somerset County, MD
- Talbot County, MD
- Washington County, MD
- Wicomico County, MD
- Worcester County, MD
Map of Maryland Counties
