240 Area Code belongs to the Maryland (MD) State.
Other cities in the 240 Area Code.
Aspen Hill, Bethesda, Bowie, Chillum, Clinton, Fairland, Fort Washington, Frederick, Gaithersburg, Germantown, Hagerstown, Montgomery Village, Olney, Oxon Hill-Glassmanor, Potomac, Rockville, Silver Spring, St. Charles, Suitland, Wheaton-Glenmont
Maryland (MD)
also shares with these area codes: