Marion, Massachusetts is located Southeastern Massachusetts, bordered by Wareham on the northeast, Buzzards Bay on the east and south, and Mattapoisett and Rochester on the southwest and northwest. Marion is 26 miles southwest of Plymouth and 55 miles south of Boston. The principal highways are U.S. Route 6, Interstate Route 195, and State Route 105. There is no freight or passenger rail service in Marion, but the network of intermodal facilities serving eastern Massachusetts and Rhode Island is easily accessible.

Some information gathered on Marion, MA is courtesy of Commonwealth Communities at Mass.gov