Route 623

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Maryland Route 623

Maryland Route 623 is a minor collector branching north from MD 161 (Main Street) and Darlington across U.S. 1 (Conowingo Road). Following Castleton Road, MD 623 travels 3.14 miles to Flintville Road. The remainder of the route lines Flintville Road northwest to Bald Hill, Broad Creek Park and the Pennsylvania state line.

Maryland Route 623 North
MD 623 (Castleton Road) intersects U.S. 1 (Conowingo Road) just north of its beginning at Darlington. The connection provides a cut off from MD 161 north to U.S. 1 for Cecil County. MD 623 otherwise continues northwest to Berkley, Castleton and York County, Pennsylvania.

MD 623 (Castleton Road) intersects U.S. 1 (Conowingo Road) just north of its beginning at Darlington. The connection provides a cut off from MD 161 north to U.S. 1 for Cecil County. MD 623 otherwise continues northwest to Berkley, Castleton and York County, Pennsylvania.

06/30/10

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U.S. 1U.S. 1
Maryland Route 161Route 161

Page Updated Friday June 13, 2025.