Chase is an unincorporated community in eastern Baltimore County, Maryland, United States. Chase is located at 39°21′48″N 76°22′16″W / 39.36333°N 76.37111°W. Chase is located on the waterfront of the Gunpowder River, Middle River, Dundee Creek, Saltpeter Creek, and Chesapeake Bay. Nearby places include Middle River, Bowleys Quar…Chase is an unincorporated community in eastern Baltimore County, Maryland, United States. Chase is located at 39°21′48″N 76°22′16″W / 39.36333°N 76.37111°W. Chase is located on the waterfront of the Gunpowder River, Middle River, Dundee Creek, Saltpeter Creek, and Chesapeake Bay. Nearby places include Middle River, Bowleys Quarters, Essex, and Aberdeen Proving Grounds.