Middle River is an unincorporated community and census-designated place in Baltimore County, Maryland, United States.

Hopkins & Co Baltimore County Map[3] and by 1898 had a designated Post Office and modest street grid.

[4] The town expanded during the 1930s and 1940s and established the "Aero Acres" housing community which borders the railroad tracks and Martin Blvd.

Before, during, and after World War II many Appalachian migrants settled in the Baltimore area, including Middle River.

[8] Victory Villa Elementary School was built in the 1930s to teach the children of the Martin Aerospace Center's employees.

[9] Martin Boulevard Elementary School was built in the 1950s and rebuilt on the same property in the 1990s to accommodate the ever-expanding population in the Middle River Community.