Area Code 227
(301 and 240) - (410 and 443 and 667)
Area Code 227 History:
Not in Service
Area code 227 has been proposed as a distributed overlay of area codes 240 and 301 in Maryland.
Area code 227 will be implemented at a future date when the area code overlay is needed. Ten digit dialing (area code + seven digit number) will necessary in the 227/240/301 overlay because different homes in the same geographic area can have the same seven digit phone number but each would have a different area code.
Counties in Maryland within area code 227 will include:
Allegany County, Anne Arundel County, Calvert County, Charles County, Frederick County, Garrett County, Howard County, Montgomery County, Prince Georges County, Saint Marys County, and Washington County.
Major cities or places in Maryland within area code 227 will include:
Area codes 240 and 301 serve central and western Maryland including Bethesda, College Park, Frederick, Gaithersburg, Hagerstown, Landover, Rockville, Silver Springs and Weaton-Glenmont in addition to many smaller communities northwest of Washington, D.C.