Abingdon is an unincorporated community in Harford County, Maryland, United States. It lies 25 miles northeast of Baltimore, near the Bush River. Since it is located in Harford County, the community of Abingdon is served by the Harford County Public Schools. Most students in Abingdon up to and including fifth grade attend William S. James Elementary School or Abingdon Elementary School. Some of these students at William S. James Elementary will attend Edgewood Middle School, Magnolia Middle School, and then Edgewood High School or Joppatowne High School, while the remainder will attend Patterson Mill Middle/High School. In addition, all of the students at Abingdon Elementary move up to Edgewood High School, as well.