Maryland Route 161 (MD 161) is a state highway in the U.S. state of Maryland. The state highway runs 5.38 mi from MD 155 in Hopewell Village north to U.S. Route 1 (US 1) in Darlington. MD 161 connects Havre de Grace with Susquehanna State Park and northeastern Harford County. The state highway was mostly constructed in the late 1920s and early 1930s.
MD 161 is more than 8 km long