Most numbers within Area Code 240 are located in the following cities: Bethesda, Ridge, California, Hagerstown, Rockville, Glenn Dale, Damascus, La Plata, Indian Head, Waldorf, Oakland, Mechanicsville, Frederick, Nanjemoy, Poolesville, Kensington, Gaithersburg, College Park, Hughesville, Newburg, Lexington Park, Leonardtown, District Heights, Clinton, Silver Spring, Brandywine, Cascade, Oxon Hill, Laurel, Washington, Grantsville, Frostburg, Hancock, Thurmont, Hyattsville, Upper Marlboro, Capitol Heights, Emmitsburg, Westernport, Sandy Spring, Buckeystown, Myersville, Cumberland, Williamsport, Mount Airy, Moses Lake, Middletown, Graham, Orlando, Germantown, Directory Assistance, Pompano Beach, Martinsburg, Bentonville, Lanham, Dubuque, Greencastle, Myrtle Beach, Wichita Falls, Accokeek, New Market, Montgomery Village, Pittsburgh, Vernon, Potomac, Gainesville, Temple Hills, Converse, Beltsville, Lothian, Riverdale, Valley View, Swansboro, Smithsburg, Ridgeley, Salinas, Brentwood, Springtown, Huntingtown, Olney, Suitland, Lonaconing, Durham, Apopka, Leonia, Miami, Keedysville, Glen Burnie, Bladensburg, San Antonio, Santa Clarita, Campbellsville, Barksdale Afb, Greenbelt, Santa Clara, Mount Savage, Chestertown, Bowie, Katy, Takoma Park, Houston, Walkersville, Brooklyn, Chester, Monroe, New Milford, Boyds, South Richmond Hill, Crofton, Broadband and IP Services, Jessup, Boca Raton, Fort Washington, Chevy Chase, Cary, Fairfax, Pasadena, Standard Plant Test Code, Derwood, Prescott, Princess Anne.
About Bethesda, Maryland
Bethesda is a census-designated place in southern Montgomery County, Maryland, United States, located just northwest of the U.S. capital of Washington, D.C. It takes its name from a local church, the Bethesda Meeting House (1820, rebuilt 1849), which in turn took its name from Jerusalem's Pool of Bethesda. In Aramaic, ܒܝܬ ܚܣܕܐ beth ḥesda means "House of Mercy" and in Hebrew, בית חסד "beit ḥesed" means "House of Kindness". The National Institutes of Health main campus and the Walter Reed National Military Medical Center are in Bethesda, as are a number of corporate and government headquarters.In 2014 it placed first in Forbes' list of America's most educated small towns and first on Time's list of top earning towns. As an unincorporated area, Bethesda has no official boundaries. The United States Census Bureau defines a census-designated place named Bethesda whose center is located at 38°59′N 77°7′W / 38.983°N 77.117°W / 38.983; -77.117. The United States Geological Survey has defined Bethesda as an area whose center is at 38°58′50″N 77°6′2″W / 38.98056°N 77.10056°W / 38.98056; -77.10056, slightly different from the Census Bureau's definition. Other definitions are used by the Bethesda Urban Planning District, the United States Postal Service (which defines Bethesda to comprise the zip codes 20810, 20811, 20813, 20814, 20815, 20816, and 20817), and other organizations. According to estimates released by the U.S. Census Bureau in 2013, the community had a total population of 63,374. Most of Bethesda's residents are in Maryland Legislative District 16.