List of all counties in Maryland state in ABC order. Counties with red border around name have population of more than 100 000. Double width border represents the population of 500 000+.
Allegany County Anne Arundel County Baltimore city Baltimore County Calvert County Caroline County Carroll County Cecil County Charles County Dorchester County Frederick County Garrett County Harford County Howard County Kent County Montgomery County Prince George's County Queen Anne's County Somerset County St. Mary's County Talbot County Washington County Wicomico County Worcester County
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