Frederick County Maryland Court Circuit Court District Court Orphans’ Courts Circuit Courts in Frederick County Frederick County Circuit CourtFrederick County Courthouse100 W Patrick St, Frederick, MD 21701Phone: 301-600-1976 District Courts in Frederick County Frederick County District CourtFrederick County Courthouse100 W Patrick St, Frederick, MD 21701Phone: 301-600-2000 Orphans’ Courts in Frederick County Frederick County Orphans’ CourtFrederick County Courthouse100 W Patrick St, Frederick, MD 21701Phone: 301-600-6565Fax: 301-600-6580