Area Code 240

Area Code 240
Post Office City: Waldorf, MD
County: Charles County County
Timezone: America/New_York
Coordinates: -76.9, 38.64
Area Code: 240

What is the Area Code?

In the United States, the "Area Code" is a numerical prefix used in phone numbers to identify a specific geographic region within the country. These area codes are part of the telephone numbering system and are essential for the proper routing of calls.

The area code typically consists of three digits and precedes the local phone number. For example, in the phone number (212) 555-1234, "212" is the area code that corresponds to a part of New York City.

Functions of the Area Code:

Geographic Identification: Allows the determination of the region or city from which a call originates. Call Routing: Helps telephone service providers direct calls efficiently through their network. Number Distribution: Facilitates the assignment and organization of phone numbers to avoid conflicts and duplications. Billing: Sometimes, call costs can vary depending on the area code, especially for long-distance calls. In summary, area codes are fundamental to the functioning of the telephone system in the United States, ensuring that calls are connected correctly and managed in an orderly manner.

240

Cities and counties within 240 Area Code

Here are the cities and towns for Area Code 240 that the US Post Office accepts. The city listed as the main city is usually where the main post office is located. When sending a letter or package, always include your preferred city to ensure your delivery is as successful as possible

Primary CityAceptable CitiesStateCountyZIPArea codesTimezone
WaldorfSaint CharlesMaryland(MD)Charles County20602301, 240America/New_York
WaldorfSaint CharlesMaryland(MD)Charles County20603301, 240America/New_York
WaldorfSaint CharlesMaryland(MD)Charles County20604240America/New_York
Bel Alton--Maryland(MD)Charles County20611301, 240America/New_York
Brandywine--Maryland(MD)Prince George s County20613301, 240America/New_York
Bryans Road--Maryland(MD)Charles County20616301, 240America/New_York
California--Maryland(MD)St Mary s County20619301, 240America/New_York
Callaway--Maryland(MD)St Mary s County20620301, 240America/New_York
Cheltenham--Maryland(MD)Prince George s County20623301, 240America/New_York
Faulkner--Maryland(MD)Charles County20632301, 240America/New_York
Great Mills--Maryland(MD)St Mary s County20634301, 240America/New_York
Helen--Maryland(MD)St Mary s County20635240America/New_York
Hughesville--Maryland(MD)Charles County20637301, 240America/New_York
Indian HeadPisgahMaryland(MD)Charles County20640301, 240America/New_York
IssueSwan PointMaryland(MD)Charles County20645202, 301, 240America/New_York
La PlataDentsvilleMaryland(MD)Charles County20646301, 240America/New_York
Leonardtown--Maryland(MD)St Mary s County20650202, 301, 240America/New_York
Lexington ParkLexington PkMaryland(MD)St Mary s County20653240, 301America/New_York
MechanicsvilleMechanicsvlleMaryland(MD)St Mary s County20659240, 301America/New_York
Morganza--Maryland(MD)St Mary s County20660240America/New_York
Nanjemoy--Maryland(MD)Charles County20662301, 240America/New_York
Patuxent RiverPatuxent RivMaryland(MD)St Mary s County20670301, 240America/New_York
Port Tobacco--Maryland(MD)Charles County20677240, 301America/New_York
Prince FrederickDares Beach, Prnc FrederckMaryland(MD)Calvert County20678240, 410, 301America/New_York
Ridge--Maryland(MD)St Mary s County20680240, 301America/New_York
Rock Point--Maryland(MD)Charles County20682240America/New_York
Southern Md FacilitySthrn Md FacMaryland(MD)Prince George s County20697240America/New_York
Beltsville--Maryland(MD)Prince George s County20704240America/New_York
LanhamGlenarden, Lanham Seabrook, SeabrookMaryland(MD)Prince George s County20706301, 410, 240America/New_York
Laurel--Maryland(MD)Prince George s County20707240, 301, 410America/New_York
LaurelMontpelierMaryland(MD)Prince George s County20708301, 240, 410, 443America/New_York
Lothian--Maryland(MD)Anne Arundel County20711410, 301, 240America/New_York
Mount Rainier--Maryland(MD)Prince George s County20712240, 301, 202America/New_York
Bowie--Maryland(MD)Prince George s County20719240America/New_York
Bowie--Maryland(MD)Prince George s County20720301, 410, 240America/New_York
BowieMitchellvilleMaryland(MD)Prince George s County20721301, 202, 240, 410America/New_York
BrentwoodColmar Manor, Cottage City, N Brentwood, No Brentwood, North Brentwo, North BrentwoodMaryland(MD)Prince George s County20722301, 240America/New_York
LaurelScaggsvilleMaryland(MD)Howard County20723240, 301, 410, 443America/New_York
LaurelMaryland City, Md City, RussettMaryland(MD)Anne Arundel County20724301, 240, 410, 443America/New_York
Laurel--Maryland(MD)Prince George s County20726240America/New_York
Capitol HeightsCapitol HgtsMaryland(MD)Prince George s County20731240America/New_York
Clinton--Maryland(MD)Prince George s County20735240, 301, 410America/New_York
RiverdaleRiverdale Park, Riverdale PkMaryland(MD)Prince George s County20737301, 202, 240America/New_York
Riverdale--Maryland(MD)Prince George s County20738240America/New_York
College ParkBerwyn Heights, Berwyn HtsMaryland(MD)Prince George s County20740301, 240, 703, 202America/New_York
Fort WashingtonFt WashingtonMaryland(MD)Prince George s County20744301, 240America/New_York
Oxon HillForest Heights, Forest HtsMaryland(MD)Prince George s County20745301, 240America/New_York
SuitlandCamp Springs, Hillcrest Hgts, Hillcrest Hts, MorningsideMaryland(MD)Prince George s County20746301, 240America/New_York
District HeightsDistrict Hts, ForestvilleMaryland(MD)Prince George s County20747240, 301America/New_York
Temple HillsCamp Springs, Hillcrest Heights, Hillcrest Hts, Marlow Heights, Marlow HgtsMaryland(MD)Prince George s County20748301, 202, 240America/New_York
Fort WashingtonFt WashingtonMaryland(MD)Prince George s County20749240America/New_York
Suitland--Maryland(MD)Prince George s County20752240America/New_York
Temple Hills--Maryland(MD)Prince George s County20757240America/New_York
Andrews Air Force BaseAndrews AfbMaryland(MD)Prince George s County20762240, 301America/New_York
Savage--Maryland(MD)Howard County20763301, 410, 240, 443America/New_York
Shady Side--Maryland(MD)Anne Arundel County20764301, 410, 240America/New_York
Greenbelt--Maryland(MD)Prince George s County20768240America/New_York
Greenbelt--Maryland(MD)Prince George s County20770301, 240, 410America/New_York
Upper MarlboroUppr MarlboroMaryland(MD)Prince George s County20773240America/New_York
Upper MarlboroGlenarden, Kettering, Largo, Springdale, Uppr Marlboro, Upr MarlboroMaryland(MD)Prince George s County20774202, 240, 301, 410America/New_York
Hyattsville--Maryland(MD)Prince George s County20781240, 301America/New_York
HyattsvilleChillum, University Pa, University Park, W Hyattsville, West HyattsvilleMaryland(MD)Prince George s County20782240, 301, 410, 202America/New_York
HyattsvilleAdelphiMaryland(MD)Prince George s County20783240, 410, 301, 202, 443America/New_York
HyattsvilleCheverly, Landover, N Englewood, North EnglewoodMaryland(MD)Prince George s County20785240, 301America/New_York
HyattsvilleLangley ParkMaryland(MD)Prince George s County20787240America/New_York
HyattsvilleW HyattsvilleMaryland(MD)Prince George s County20788240America/New_York
Capitol HeightsCapitol HgtsMaryland(MD)Prince George s County20790240America/New_York
Capitol HeightsCapitol HgtsMaryland(MD)Prince George s County20791240America/New_York
Upper MarlboroLargo, Uppr MarlboroMaryland(MD)Prince George s County20792240America/New_York
Jessup--Maryland(MD)Howard County20794301, 410, 443, 240America/New_York
Southern Md FacilitySthrn Md FacMaryland(MD)Prince George s County20797240America/New_York
Capitol HeightsCapitol HgtsMaryland(MD)Prince George s County20799240America/New_York
Bethesda--Maryland(MD)Montgomery County20810240America/New_York
Bethesda--Maryland(MD)Montgomery County20811240America/New_York
Bethesda--Maryland(MD)Montgomery County20813240, 301America/New_York
Bethesda--Maryland(MD)Montgomery County20814202, 240, 301America/New_York
Chevy ChaseBethesda, Chevy Chase Village, Chevy Chs Vlg, Martins Add, Martins Additions, N Chevy Chase, North Chevy ChaseMaryland(MD)Montgomery County20815240, 301America/New_York
Bethesda--Maryland(MD)Montgomery County20816301, 202, 240America/New_York
BethesdaWestlakeMaryland(MD)Montgomery County20817301, 240, 202America/New_York
Bethesda--Maryland(MD)Montgomery County20824240America/New_York
Chevy ChaseBethesdaMaryland(MD)Montgomery County20825240America/New_York
BethesdaW Bethesda, WestlakeMaryland(MD)Montgomery County20827240America/New_York
Poolesville--Maryland(MD)Montgomery County20837301, 240America/New_York
Rockville--Maryland(MD)Montgomery County20847240America/New_York
Rockville--Maryland(MD)Montgomery County20848240America/New_York
Rockville--Maryland(MD)Montgomery County20849240America/New_York
Rockville--Maryland(MD)Montgomery County20850240, 301, 410, 202America/New_York
Rockville--Maryland(MD)Montgomery County20851301, 240America/New_York
RockvilleN Bethesda, North BethesdaMaryland(MD)Montgomery County20852240, 301, 703America/New_York
Rockville--Maryland(MD)Montgomery County20853301, 240America/New_York
PotomacRockvilleMaryland(MD)Montgomery County20854240, 301America/New_York
DerwoodRockvilleMaryland(MD)Montgomery County20855301, 240America/New_York
Sandy Spring--Maryland(MD)Montgomery County20860301, 240America/New_York
Ashton--Maryland(MD)Montgomery County20861301, 240America/New_York
ClarksburgHyattstownMaryland(MD)Montgomery County20871301, 240America/New_York
Damascus--Maryland(MD)Montgomery County20872301, 240America/New_York
GermantownDarnestownMaryland(MD)Montgomery County20874240, 301America/New_York
GaithersburgMontgomery Village, Montgomry VlgMaryland(MD)Montgomery County20877301, 240, 202America/New_York
GaithersburgDarnestown, N Potomac, No Potomac, North PotomacMaryland(MD)Montgomery County20878301, 240, 202America/New_York
GaithersburgLaytonsville, Montgomery Village, Montgomry VlgMaryland(MD)Montgomery County20879301, 240America/New_York
GaithersburgLaytonsvilleMaryland(MD)Montgomery County20882240, 301America/New_York
Gaithersburg--Maryland(MD)Montgomery County20883240America/New_York
Gaithersburg--Maryland(MD)Montgomery County20884240America/New_York
Gaithersburg--Maryland(MD)Montgomery County20885202, 240America/New_York
Montgomery VillageGaithersburg, Montgomry VlgMaryland(MD)Montgomery County20886240, 301America/New_York
Kensington--Maryland(MD)Montgomery County20891240America/New_York
Bethesda--Maryland(MD)Montgomery County20894240America/New_York
Kensington--Maryland(MD)Montgomery County20895240, 301America/New_York
Suburb Maryland FacSubn Md FacMaryland(MD)Montgomery County20897240America/New_York
Gaithersburg--Maryland(MD)Montgomery County20898240America/New_York
Gaithersburg--Maryland(MD)Montgomery County20899240America/New_York
Silver SpringTakoma ParkMaryland(MD)Montgomery County20901301, 240, 410America/New_York
Silver SpringWheatonMaryland(MD)Montgomery County20902301, 240, 410America/New_York
Silver SpringColesvilleMaryland(MD)Montgomery County20904202, 240, 301, 703, 410America/New_York
Silver SpringAspen HillMaryland(MD)Montgomery County20906240, 301, 410America/New_York
Silver Spring--Maryland(MD)Montgomery County20908240America/New_York
Silver Spring--Maryland(MD)Montgomery County20910240, 301, 202America/New_York
Silver Spring--Maryland(MD)Montgomery County20911240America/New_York
Takoma ParkSilver SpringMaryland(MD)Montgomery County20912301, 240America/New_York
Takoma ParkSilver SpringMaryland(MD)Montgomery County20913240America/New_York
Silver SpringColesvilleMaryland(MD)Montgomery County20914240America/New_York
Silver SpringWheatonMaryland(MD)Montgomery County20915240America/New_York
Silver SpringAspen HillMaryland(MD)Montgomery County20916240America/New_York
Silver Spring--Maryland(MD)Montgomery County20918240America/New_York
Silver Spring--Maryland(MD)Montgomery County20993240America/New_York
Silver Spring--Maryland(MD)Montgomery County20997240America/New_York
Columbia--Maryland(MD)Howard County21045301, 410, 443, 240America/New_York
Columbia--Maryland(MD)Howard County21046410, 443, 301, 240America/New_York
Elkridge--Maryland(MD)Howard County21075410, 443, 301, 240America/New_York
Odenton--Maryland(MD)Anne Arundel County21113410, 301, 443, 240America/New_York
Crofton--Maryland(MD)Anne Arundel County21114410, 443, 301, 240America/New_York
HalethorpeArbutus, Baltimore, LansdowneMaryland(MD)Baltimore County21227410, 443, 240America/New_York
AnnapolisEastport, Highland BchMaryland(MD)Anne Arundel County21403410, 443, 703, 240, 301America/New_York
Cumberland--Maryland(MD)Allegany County21501240America/New_York
CumberlandCresaptown, LavaleMaryland(MD)Allegany County21502301, 240America/New_York
CumberlandLavaleMaryland(MD)Allegany County21504240America/New_York
CumberlandCresaptownMaryland(MD)Allegany County21505240America/New_York
Frostburg--Maryland(MD)Allegany County21532301, 240America/New_York
GrantsvilleJenningsMaryland(MD)Garrett County21536301, 240America/New_York
OaklandCrellin, Deer Park, Hutton, Loch Lyn Hght, Loch Lynn Heights, Mnt Lake Park, Mountain Lake Park, Mt Lake Park, Mtin Lk ParkMaryland(MD)Garrett County21550301, 240America/New_York
Pinto--Maryland(MD)Allegany County21556240America/New_York
Rawlings--Maryland(MD)Allegany County21557301, 240America/New_York
Spring Gap--Maryland(MD)Mineral County21560240America/New_York
WesternportMccooleMaryland(MD)Allegany County21562301, 240America/New_York
FrederickLewistownMaryland(MD)Frederick County21701301, 410, 240America/New_York
FrederickFort DetrickMaryland(MD)Frederick County21702301, 240America/New_York
Frederick--Maryland(MD)Frederick County21703240, 301America/New_York
FrederickUrbanaMaryland(MD)Frederick County21704240, 301America/New_York
Frederick--Maryland(MD)Frederick County21705240America/New_York
Frederick--Maryland(MD)Frederick County21709240America/New_York
Braddock HeightsBraddock HtsMaryland(MD)Frederick County21714240America/New_York
Brownsville--Maryland(MD)Washington County21715240America/New_York
Brunswick--Maryland(MD)Frederick County21716301, 240America/New_York
Burkittsville--Maryland(MD)Frederick County21718240America/New_York
CascadeFort Ritchie, HighfieldMaryland(MD)Washington County21719301, 240America/New_York
Cavetown--Maryland(MD)Washington County21720240America/New_York
Chewsville--Maryland(MD)Washington County21721240America/New_York
Emmitsburg--Maryland(MD)Frederick County21727301, 240America/New_York
Funkstown--Maryland(MD)Washington County21734240America/New_York
Hagerstown--Maryland(MD)Washington County21740240, 301America/New_York
Hagerstown--Maryland(MD)Washington County21741240America/New_York
Hagerstown--Maryland(MD)Washington County21742301, 240America/New_York
Hagerstown--Maryland(MD)Washington County21746240America/New_York
Hagerstown--Maryland(MD)Washington County21747240America/New_York
Hagerstown--Maryland(MD)Washington County21748240America/New_York
Hagerstown--Maryland(MD)Washington County21749240America/New_York
Hancock--Maryland(MD)Washington County21750301, 240America/New_York
Ijamsville--Maryland(MD)Frederick County21754301, 240America/New_York
Ladiesburg--Maryland(MD)Frederick County21759240America/New_York
Libertytown--Maryland(MD)Frederick County21762301, 240America/New_York
Middletown--Maryland(MD)Frederick County21769301, 240America/New_York
Monrovia--Maryland(MD)Frederick County21770301, 240America/New_York
Mount Airy--Maryland(MD)Carroll County21771301, 443, 410, 240America/New_York
Myersville--Maryland(MD)Frederick County21773304, 301, 240America/New_York
New Market--Maryland(MD)Frederick County21774301, 240America/New_York
New Midway--Maryland(MD)Frederick County21775240America/New_York
Sabillasville--Maryland(MD)Frederick County21780301, 240America/New_York
Saint James--Maryland(MD)Washington County21781240America/New_York
Smithsburg--Maryland(MD)Washington County21783301, 240America/New_York
ThurmontGracehamMaryland(MD)Frederick County21788301, 240America/New_York
Unionville--Maryland(MD)Frederick County21792240America/New_York
Walkersville--Maryland(MD)Frederick County21793301, 240America/New_York
Williamsport--Maryland(MD)Washington County21795301, 240America/New_York
Woodsboro--Maryland(MD)Frederick County21798301, 240, 410America/New_York