240 Area Code

Area code 240 generally covers Mount Rainier, Laurel, and Chevy Chase in the U.S. State of Maryland.

Top cities in area code 240

City Prefixes
Mount Rainier, MD8.8%
Laurel, MD8.1%
Chevy Chase, MD7.2%
Frederick, MD7.2%
Silver Spring, MD7%
Rockville, MD5.9%
Montgomery Village, MD5.4%
Hagerstown, MD4.3%
Waldorf, MD3.8%
Glen Echo, MD3.4%

Top telephone carriers in area code 240

Carrier Prefixes
Verizon17.7%
Sprint Spectrum10.7%
New Cingular Wireless8.3%
Level 3 Communications6%
Peerless Network Of Maryland6%
Omnipoint Communications Cap Operations5.7%
XO Communications4.7%
Core Communications4.4%
Onvoy4.2%
Global Crossing Local Services3.2%

Area code 240 has 683 prefixes

Prefix Primary City Usage
240-200Mount RainierLandline
240-201RidgeLandline
240-202CascadeLandline
240-203HagerstownWireless
240-204Chevy ChaseWireless
240-205Glen EchoWireless
240-206LanhamLandline
240-207MonroviaLandline
240-208Port TobaccoLandline
240-209Indian HeadLandline
240-210WaldorfWireless
240-212OaklandLandline
240-213WaldorfLandline
240-214MechanicsvilleLandline
240-215FrederickLandline
240-216WaldorfWireless
240-217HagerstownWireless
240-218NanjemoyLandline
240-219RidgeLandline
240-220PoolesvilleLandline
240-221RockvilleLandline
240-222WaldorfLandline
240-223Mount RainierLandline
240-224Montgomery VillageWireless
240-225FrederickLandline
240-226OaklandLandline
240-228LaurelLandline
240-229WaldorfLandline
240-230HughesvilleLandline
240-231HagerstownLandline
240-232Mount RainierLandline
240-233NewburgLandline
240-234Oxon HillWireless
240-235Chevy ChaseLandline
240-236FrederickLandline
240-237Lexington ParkLandline
240-238RockvilleLandline
240-239LeonardtownLandline
240-240FrederickLandline
240-241Chevy ChaseLandline
240-242Mount RainierLandline
240-243Montgomery VillageLandline
240-244Mount RainierLandline
240-245LanhamLandline
240-246Montgomery VillageLandline
240-247Mount RainierLandline
240-248RidgeLandline
240-249MechanicsvilleLandline
240-250BrandywineLandline
240-251CascadeLandline
240-252Montgomery VillageLandline
240-253Temple HillsLandline
240-254HughesvilleLandline
240-255PoolesvilleLandline
240-256LeonardtownLandline
240-257NanjemoyLandline
240-258RidgeLandline
240-260LanhamLandline
240-261Montgomery VillageLandline
240-262Lexington ParkWireless
240-263Chevy ChaseWireless
240-264LaurelLandline
240-265Chevy ChaseWireless
240-266LanhamLandline
240-267HagerstownWireless
240-268RockvilleLandline
240-269Mount RainierLandline
240-270WaldorfWireless
240-271Chevy ChaseWireless
240-272Chevy ChaseWireless
240-273Mount RainierLandline
240-274Chevy ChaseWireless
240-275GrantsvilleLandline
240-276RockvilleLandline
240-277Chevy ChaseWireless
240-278LaurelWireless
240-279WaldorfLandline
240-280LaurelLandline
240-281Chevy ChaseWireless
240-282MechanicsvilleLandline
240-283Silver SpringLandline
240-284FrostburgLandline
240-285FrederickLandline
240-286Chevy ChaseWireless
240-287HancockLandline
240-288ThurmontLandline
240-289Temple HillsLandline
240-290Mount RainierLandline
240-291HagerstownWireless
240-292Silver SpringLandline
240-293Mount RainierLandline
240-294LaurelLandline
240-295LaurelLandline
240-296Mount RainierLandline
240-297RiverdaleLandline
240-298LeonardtownWireless
240-299WaldorfWireless
240-300WaldorfWireless
240-301Clear SpringLandline
240-302LaurelWireless
240-303ClintonLandline
240-304Mount RainierWireless
240-305LaurelWireless
240-306Montgomery VillageLandline
240-307EmmitsburgLandline
240-308MonroviaWireless
240-309Silver SpringWireless
240-310HagerstownWireless
240-312HyattsvilleLandline
240-313HagerstownLandline
240-314RockvilleLandline
240-315FrederickLandline
240-316Chevy ChaseWireless
240-317Lexington ParkLandline
240-318ClintonLandline
240-319ColumbiaWireless
240-320WaldorfLandline
240-321OaklandWireless
240-322WesternportLandline
240-323EmmitsburgLandline
240-324HighlandLandline
240-325MonroviaLandline
240-326Upper MarlboroLandline
240-327Montgomery VillageLandline
240-328RockvilleLandline
240-329HagerstownLandline
240-330Mount RainierWireless
240-331Mount RainierLandline
240-332NewburgLandline
240-333Mount RainierLandline
240-334LanhamLandline
240-335LanhamLandline
240-336Chevy ChaseLandline
240-338Silver SpringWireless
240-339Upper MarlboroLandline
240-340Chevy ChaseWireless
240-341FrederickLandline
240-342Sandy SpringLandline
240-343HancockWireless
240-344FrederickWireless
240-345Sandy SpringLandline
240-346WaldorfWireless
240-347HagerstownLandline
240-348ClintonLandline
240-349Port TobaccoLandline
240-350LaurelWireless
240-351LaurelWireless
240-352Port TobaccoLandline
240-353LaurelWireless
240-354LaurelWireless
240-355LaurelWireless
240-356FrederickLandline
240-357FrederickWireless
240-358MonroviaLandline
240-359Indian HeadLandline
240-360LaurelWireless
240-361Montgomery VillageLandline
240-362CumberlandLandline
240-363Silver SpringLandline
240-364Montgomery VillageLandline
240-365MonroviaLandline
240-366WilliamsportLandline
240-367FrederickWireless
240-368WaldorfLandline
240-369Mount AiryLandline
240-370Chevy ChaseWireless
240-371Mount RainierLandline
240-372Montgomery VillageWireless
240-373OdentonLandline
240-374LaurelLandline
240-375SuitlandWireless
240-376HughesvilleLandline
240-377Indian HeadLandline
240-378CumberlandLandline
240-379FrederickLandline
240-380Glen EchoWireless
240-381Silver SpringWireless
240-382HagerstownLandline
240-383Chevy ChaseWireless
240-384Lexington ParkLandline
240-385MyersvilleLandline
240-386Montgomery VillageLandline
240-387Chevy ChaseLandline
240-388Montgomery VillageWireless
240-389Sandy SpringLandline
240-390Sandy SpringLandline
240-391RiverdaleLandline
240-392Mount RainierLandline
240-393Glen EchoWireless
240-394Mount AiryWireless
240-395Chevy ChaseLandline
240-396Chevy ChaseLandline
240-397FrederickWireless
240-398Glen EchoWireless
240-399Chevy ChaseLandline
240-400Chevy ChaseWireless
240-401RockvilleWireless
240-402RiverdaleLandline
240-403RockvilleLandline
240-404Montgomery VillageLandline
240-405FrederickLandline
240-406RockvilleWireless
240-407ClintonLandline
240-408RockvilleWireless
240-409FrederickWireless
240-410CumberlandWireless
240-412WaldorfWireless
240-413Mount RainierWireless
240-414Mount RainierLandline
240-415FrederickLandline
240-416WaldorfWireless
240-417SuitlandWireless
240-418LaurelWireless
240-419WaldorfWireless
240-420HagerstownLandline
240-421RockvilleWireless
240-422FrederickWireless
240-423Silver SpringWireless
240-424Mount RainierWireless
240-426Chevy ChaseWireless
240-427WaldorfLandline
240-428RockvilleLandline
240-429Silver SpringWireless
240-430Silver SpringLandline
240-431Tall TimbersWireless
240-432LaurelWireless
240-433Silver SpringLandline
240-434LeonardtownLandline
240-435WaldorfWireless
240-436IjamsvilleLandline
240-437Sandy SpringLandline
240-438Silver SpringWireless
240-439FrederickWireless
240-440FrederickWireless
240-441Temple HillsWireless
240-442OaklandLandline
240-443Temple HillsLandline
240-444LaurelWireless
240-445Chevy ChaseWireless
240-446FrederickWireless
240-447RockvilleWireless
240-448WaldorfWireless
240-449Montgomery VillageWireless
240-450Silver SpringLandline
240-451ThurmontLandline
240-452HagerstownLandline
240-453RockvilleLandline
240-454Montgomery VillageWireless
240-455HyattsvilleLandline
240-456LaurelLandline
240-457FrederickWireless
240-458WaldorfWireless
240-459LaurelWireless
240-460Silver SpringWireless
240-461Silver SpringWireless
240-462LaurelWireless
240-463Silver SpringWireless
240-464Chevy ChaseLandline
240-465Mount RainierLandline
240-466MechanicsvilleWireless
240-467Mount RainierLandline
240-468Mount RainierWireless
240-469HagerstownWireless
240-470LaurelWireless
240-471Silver SpringLandline
240-472Silver SpringWireless
240-473RiverdaleLandline
240-474Montgomery VillageLandline
240-475Silver SpringWireless
240-476Silver SpringWireless
240-477Montgomery VillageLandline
240-478Glen EchoWireless
240-479Temple HillsWireless
240-480Chevy ChaseWireless
240-481Silver SpringWireless
240-482Glen EchoLandline
240-483Glen EchoLandline
240-484LaurelWireless
240-485Glen EchoLandline
240-486LanhamWireless
240-487Mount RainierLandline
240-488OaklandLandline
240-489PoolesvilleLandline
240-490MiddletownWireless
240-491Silver SpringLandline
240-492HyattsvilleLandline
240-493Temple HillsLandline
240-494Mount RainierLandline
240-495Mount RainierWireless
240-496LeonardtownWireless
240-497Chevy ChaseLandline
240-498LaurelWireless
240-499RockvilleLandline
240-500HagerstownLandline
240-501Silver SpringWireless
240-502Silver SpringWireless
240-503NewburgLandline
240-504Silver SpringWireless
240-505Silver SpringWireless
240-506RockvilleWireless
240-507Mount RainierWireless
240-508SuitlandWireless
240-509GambrillsLandline
240-510Upper MarlboroLandline
240-512RiverdaleLandline
240-513HagerstownWireless
240-514Mount RainierLandline
240-515Chevy ChaseWireless
240-516Silver SpringLandline
240-517ColumbiaWireless
240-518WaldorfWireless
240-519Chevy ChaseWireless
240-520HagerstownWireless
240-521RockvilleLandline
240-522CumberlandWireless
240-523Port TobaccoLandline
240-524LaurelLandline
240-525Upper MarlboroLandline
240-526LeonardtownLandline
240-527HagerstownLandline
240-528HughesvilleLandline
240-529FrederickLandline
240-530WaldorfLandline
240-531Silver SpringLandline
240-532HyattsvilleWireless
240-533Mount RainierLandline
240-534Chevy ChaseWireless
240-535Silver SpringWireless
240-536Sandy SpringLandline
240-537HagerstownLandline
240-538LeonardtownLandline
240-539Mount RainierLandline
240-540Ellicott CityLandline
240-541Chevy ChaseWireless
240-542RiverdaleLandline
240-543Chevy ChaseWireless
240-544LanhamLandline
240-545Upper MarlboroLandline
240-546ClintonLandline
240-547LaurelLandline
240-548Mount RainierLandline
240-549FrederickWireless
240-550RockvilleWireless
240-551RockvilleWireless
240-552RockvilleWireless
240-553RiverdaleLandline
240-554LaurelLandline
240-556LanhamLandline
240-557Temple HillsWireless
240-558Silver SpringLandline
240-559Sandy SpringLandline
240-560Silver SpringLandline
240-561LeonardtownWireless
240-562Montgomery VillageLandline
240-563HyattsvilleLandline
240-564LaurelWireless
240-565LaurelWireless
240-566FrederickLandline
240-567RockvilleLandline
240-568LaurelLandline
240-569OldtownLandline
240-570HighlandLandline
240-572LeonardtownWireless
240-573Upper MarlboroLandline
240-574RidgeLandline
240-575FrederickLandline
240-576HagerstownLandline
240-577LeonardtownWireless
240-578FrederickWireless
240-579Sandy SpringWireless
240-580CumberlandWireless
240-581LaurelLandline
240-582RiverdaleLandline
240-583LaurelLandline
240-584LaurelWireless
240-585WaldorfWireless
240-586FrederickLandline
240-587LeonardtownWireless
240-588GrantsvilleLandline
240-589WesternportWireless
240-590Mount RainierWireless
240-591HagerstownLandline
240-592LaurelLandline
240-593LaurelWireless
240-594BittingerLandline
240-595Chevy ChaseWireless
240-596Chevy ChaseLandline
240-597Montgomery VillageLandline
240-598HughesvilleLandline
240-599RockvilleLandline
240-600Mount RainierWireless
240-601LaurelWireless
240-602LaurelWireless
240-603LaurelWireless
240-604LaurelWireless
240-605LaurelWireless
240-606LaurelWireless
240-607WaldorfLandline
240-608FrederickWireless
240-609CumberlandWireless
240-610Chevy ChaseLandline
240-612Mount RainierLandline
240-613Mount RainierLandline
240-614RockvilleWireless
240-615Mount RainierWireless
240-616RiverdaleLandline
240-617HagerstownLandline
240-618RockvilleWireless
240-620RockvilleLandline
240-622Port TobaccoLandline
240-623Mount RainierLandline
240-624RiverdaleLandline
240-625HagerstownWireless
240-626FrederickWireless
240-627Silver SpringLandline
240-628MechanicsvilleLandline
240-629FrederickLandline
240-630Chevy ChaseLandline
240-631Montgomery VillageLandline
240-632Montgomery VillageLandline
240-633HughesvilleLandline
240-634RidgeLandline
240-635NewburgLandline
240-636LaurelWireless
240-637Chevy ChaseLandline
240-638Mount RainierLandline
240-639LaurelLandline
240-640WaldorfWireless
240-641Silver SpringLandline
240-642Glen EchoLandline
240-643Silver SpringWireless
240-644Chevy ChaseLandline
240-645Chevy ChaseLandline
240-646LaurelLandline
240-647Clear SpringLandline
240-648KeedysvilleLandline
240-649SmithsburgLandline
240-650Glen EchoLandline
240-651FrederickWireless
240-652MechanicsvilleLandline
240-654Montgomery VillageWireless
240-655KitzmillerLandline
240-656PoolesvilleWireless
240-657FrederickLandline
240-658Montgomery VillageLandline
240-659Sandy SpringWireless
240-660RockvilleWireless
240-661Lexington ParkLandline
240-662Takoma ParkLandline
240-663MiddletownWireless
240-664CumberlandLandline
240-665Glen EchoWireless
240-666NanjemoyLandline
240-667Mount RainierLandline
240-668MonroviaLandline
240-669Glen EchoLandline
240-670Silver SpringLandline
240-671Mount RainierWireless
240-672RockvilleLandline
240-673Mount RainierLandline
240-674FrederickWireless
240-675MyersvilleWireless
240-676Silver SpringWireless
240-677Takoma ParkLandline
240-678Silver SpringWireless
240-679Mc HenryLandline
240-680FrederickLandline
240-681BrandywineLandline
240-682WaldorfLandline
240-683Montgomery VillageLandline
240-684RiverdaleLandline
240-685CheltenhamLandline
240-686Montgomery VillageLandline
240-687Silver SpringWireless
240-688Silver SpringWireless
240-689Upper MarlboroWireless
240-690Montgomery VillageLandline
240-691Upper MarlboroLandline
240-692GrantsvilleLandline
240-693WalkersvilleLandline
240-694RockvilleLandline
240-695Temple HillsLandline
240-696Mount RainierLandline
240-697MechanicsvilleLandline
240-698MyersvilleWireless
240-699FrederickLandline
240-701Silver SpringWireless
240-702Montgomery VillageWireless
240-703Sandy SpringWireless
240-704Mount RainierWireless
240-705Chevy ChaseWireless
240-706Mount RainierWireless
240-707HagerstownWireless
240-708ColumbiaWireless
240-709LaurelWireless
240-710FrederickLandline
240-712ColumbiaWireless
240-713LaurelLandline
240-714Mount RainierWireless
240-715RockvilleLandline
240-716HyattsvilleWireless
240-718Lexington ParkLandline
240-719HyattsvilleWireless
240-720Montgomery VillageLandline
240-721SuitlandLandline
240-722Sandy SpringLandline
240-723Silver SpringLandline
240-724Temple HillsLandline
240-725Patuxent RiverLandline
240-726LaurelLandline
240-727CumberlandWireless
240-728RockvilleLandline
240-729Sandy SpringWireless
240-730HagerstownLandline
240-731RockvilleWireless
240-732Mount AiryWireless
240-733Sandy SpringLandline
240-734HagerstownLandline
240-735KnoxvilleLandline
240-736LaurelWireless
240-737Mount RainierLandline
240-738HancockWireless
240-739FrederickLandline
240-740Glen EchoLandline
240-741FrederickLandline
240-742LaurelLandline
240-743Glen EchoLandline
240-744Glen EchoLandline
240-745MonroviaLandline
240-746BrandywineLandline
240-747Glen EchoLandline
240-748Mount RainierLandline
240-749ColumbiaWireless
240-750Montgomery VillageWireless
240-751Montgomery VillageLandline
240-752Chevy ChaseLandline
240-753RockvilleLandline
240-754WaldorfLandline
240-755LaurelLandline
240-756RockvilleWireless
240-757Mount RainierLandline
240-758LaurelWireless
240-759SunderlandLandline
240-760Takoma ParkWireless
240-762Mount RainierWireless
240-763SunderlandLandline
240-764Mount RainierLandline
240-765Chevy ChaseLandline
240-766Temple HillsLandline
240-767SuitlandLandline
240-770Mount RainierLandline
240-771PoolesvilleLandline
240-772FrederickWireless
240-773RockvilleLandline
240-774LonaconingLandline
240-775WesternportLandline
240-776Port TobaccoLandline
240-777RockvilleLandline
240-778Chevy ChaseLandline
240-779Sandy SpringLandline
240-780Montgomery VillageLandline
240-781Glen EchoLandline
240-782MonroviaLandline
240-783Chevy ChaseWireless
240-784MyersvilleWireless
240-786LaurelLandline
240-787BrandywineLandline
240-788HyattsvilleLandline
240-790RiverdaleLandline
240-793Montgomery VillageWireless
240-794Lexington ParkLandline
240-799BrandywineLandline
240-800Chevy ChaseLandline
240-801Montgomery VillageWireless
240-802Oxon HillWireless
240-803CumberlandWireless
240-804NewburgLandline
240-805Montgomery VillageWireless
240-806Indian HeadLandline
240-808LeonardtownWireless
240-810Glen EchoWireless
240-812PoolesvilleLandline
240-813Montgomery VillageLandline
240-815FrederickWireless
240-816HagerstownLandline
240-817Sandy SpringWireless
240-818SmithsburgLandline
240-820HighlandLandline
240-821Silver SpringLandline
240-822New MarketLandline
240-823BrandywineLandline
240-824CumberlandLandline
240-825Mount RainierWireless
240-826RockvilleLandline
240-828Mount RainierWireless
240-829EmmitsburgLandline
240-830HyattsvilleLandline
240-831FrederickLandline
240-832Chevy ChaseWireless
240-833Silver SpringLandline
240-834KitzmillerLandline
240-837HughesvilleLandline
240-838Glen EchoWireless
240-839Silver SpringWireless
240-840FrederickWireless
240-841LaurelLandline
240-842LanhamLandline
240-843RiverdaleLandline
240-844RidgeLandline
240-845Chevy ChaseLandline
240-846ClintonLandline
240-847Silver SpringLandline
240-848Montgomery VillageWireless
240-850HagerstownLandline
240-851WesternportLandline
240-855Glen EchoWireless
240-856ColumbiaWireless
240-857Mount RainierLandline
240-858Chevy ChaseWireless
240-859HighlandLandline
240-860CumberlandLandline
240-862Mount SavageLandline
240-863Mount RainierLandline
240-864RockvilleLandline
240-865HalethorpeLandline
240-866HagerstownLandline
240-867Takoma ParkLandline
240-868Mount RainierLandline
240-870FrederickLandline
240-873FrederickLandline
240-874ThurmontLandline
240-875Mount AiryLandline
240-876Chevy ChaseWireless
240-877FrederickLandline
240-878HagerstownLandline
240-880Silver SpringLandline
240-882SuitlandWireless
240-883Sandy SpringLandline
240-888RockvilleWireless
240-892Upper MarlboroLandline
240-893Silver SpringWireless
240-895Patuxent RiverLandline
240-897Mount RainierLandline
240-898Mount RainierLandline
240-899Chevy ChaseWireless
240-900Mount RainierLandline
240-901Port TobaccoLandline
240-903Indian HeadLandline
240-904ColumbiaWireless
240-906Mount RainierWireless
240-907RockvilleWireless
240-908FrederickLandline
240-910FrederickLandline
240-912Montgomery VillageLandline
240-913FrederickLandline
240-917LaurelWireless
240-918Sandy SpringWireless
240-920CumberlandLandline
240-922Glen EchoLandline
240-925LeonardtownWireless
240-929LanhamLandline
240-938AshtonWireless
240-942BittingerLandline
240-944WesternportLandline
240-945Glen EchoLandline
240-949ClintonLandline
240-956Glen EchoLandline
240-964CumberlandLandline
240-965RiverdaleLandline
240-970Silver SpringLandline
240-971FrederickLandline
240-972ColumbiaLandline
240-976
240-979CumberlandLandline
240-985WilliamsportLandline
240-986NanjemoyLandline
240-988LaurelWireless
240-993Indian HeadLandline
240-994RockvilleWireless
240-995CumberlandLandline
240-996KnoxvilleLandline
240-997Silver SpringWireless
240-998HancockLandline