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Area Code 240 Information and Location Details

Area code 240 serves the state of Maryland. This area code was assigned on June 21st, 1996. On June 1st, 1997 it went into service. 240 is a General Purpose Code. 240 service area does overlap with 301 area codes. Dialing pattern for local calls within the same NPA (area code) is 10D.

Area Code 240 Has 280 Exchanges

Exchange City
240-201 Ridge
240-203 Hagerstown
240-207 Damascus
240-208 La Plata
240-209 Indian Head
240-210 Waldorf
240-212 Oakland
240-213 Waldorf
240-214 Mechanicsville
240-215 Frederick
240-216 Waldorf
240-217 Hagerstown
240-218 Nanjemoy
240-219 Ridge
240-220 Poolesville
240-222 Waldorf
240-224 Gaithersburg
240-225 Frederick
240-229 Waldorf
240-230 Hughesville
240-231 Hagerstown
240-236 Frederick
240-239 Leonardtown
240-243 Gaithersburg
240-246 Gaithersburg
240-248 Ridge
240-249 Mechanicsville
240-250 Brandywine
240-252 Gaithersburg
240-254 Hughesville
240-255 Poolesville
240-256 Leonardtown
240-257 Nanjemoy
240-258 Ridge
240-261 Gaithersburg
240-264 Laurel
240-267 Hagerstown
240-270 Waldorf
240-275 Grantsville
240-278 Laurel
240-279 Waldorf
240-280 Laurel
240-282 Mechanicsville
240-284 Frostburg
240-285 Frederick
240-287 Hancock
240-288 Thurmont
240-291 Hagerstown
240-294 Laurel
240-295 Laurel
240-298 Leonardtown
240-299 Waldorf
240-300 Waldorf
240-302 Laurel
240-306 Gaithersburg
240-307 Emmitsburg
240-308 Damascus
240-309 Leonardtown
240-310 Hagerstown
240-313 Hagerstown
240-315 Frederick
240-319 Laurel
240-320 Waldorf
240-321 Oakland
240-323 Emmitsburg
240-324 Ashton
240-325 Damascus
240-327 Gaithersburg
240-329 Hagerstown
240-341 Buckeystown
240-342 Ashton
240-343 Hancock
240-344 Frederick
240-345 Ashton
240-346 Waldorf
240-347 Hagerstown
240-349 La Plata
240-352 La Plata
240-356 Myersville
240-357 Frederick
240-358 Damascus
240-359 Indian Head
240-360 Laurel
240-361 Gaithersburg
240-362 Cumberland
240-364 Gaithersburg
240-365 Damascus
240-366 Williamsport
240-367 Frederick
240-368 Waldorf
240-369 Mount Airy
240-372 Gaithersburg
240-374 Laurel
240-376 Hughesville
240-377 Indian Head
240-378 Cumberland
240-379 Frederick
240-382 Hagerstown
240-385 Myersville
240-388 Gaithersburg
240-389 Ashton
240-390 Ashton
240-394 Mount Airy
240-397 Frederick
240-404 Gaithersburg
240-405 Frederick
240-409 Frederick
240-412 Waldorf
240-415 Frederick
240-416 Waldorf
240-419 Waldorf
240-420 Hagerstown
240-422 Frederick
240-427 Waldorf
240-434 Leonardtown
240-435 Waldorf
240-436 Buckeystown
240-437 Ashton
240-439 Frederick
240-440 Frederick
240-442 Oakland
240-444 Laurel
240-446 Frederick
240-448 Waldorf
240-449 Gaithersburg
240-451 Thurmont
240-452 Hagerstown
240-454 Gaithersburg
240-456 Laurel
240-457 Frederick
240-458 Waldorf
240-459 Laurel
240-466 Mechanicsville
240-469 Hagerstown
240-470 Laurel
240-474 Gaithersburg
240-477 Gaithersburg
240-484 Laurel
240-488 Oakland
240-489 Poolesville
240-490 Middletown
240-496 Leonardtown
240-500 Hagerstown
240-513 Hagerstown
240-517 Laurel
240-518 Waldorf
240-520 Hagerstown
240-522 Cumberland
240-523 La Plata
240-524 Laurel
240-526 Leonardtown
240-527 Hagerstown
240-528 Hughesville
240-529 Frederick
240-530 Waldorf
240-536 Ashton
240-538 Leonardtown
240-547 Laurel
240-549 Frederick
240-554 Laurel
240-559 Ashton
240-561 Leonardtown
240-562 Gaithersburg
240-565 Laurel
240-566 Frederick
240-568 Laurel
240-570 Ashton
240-575 Frederick
240-577 Leonardtown
240-578 Frederick
240-580 Cumberland
240-581 Laurel
240-583 Laurel
240-585 Waldorf
240-586 Frederick
240-587 Leonardtown
240-593 Laurel
240-597 Gaithersburg
240-607 Waldorf
240-608 Frederick
240-609 Cumberland
240-625 Hagerstown
240-626 Frederick
240-629 Frederick
240-631 Gaithersburg
240-632 Gaithersburg
240-633 Hughesville
240-636 Laurel
240-640 Waldorf
240-646 Laurel
240-651 Frederick
240-652 Mechanicsville
240-654 Gaithersburg
240-657 Frostburg
240-666 Nanjemoy
240-668 Damascus
240-674 Frederick
240-675 Myersville
240-681 Brandywine
240-682 Waldorf
240-683 Gaithersburg
240-685 Brandywine
240-686 Gaithersburg
240-690 Gaithersburg
240-699 Buckeystown
240-702 Gaithersburg
240-707 Hagerstown
240-708 Laurel
240-712 Laurel
240-713 Laurel
240-720 Gaithersburg
240-722 Ashton
240-727 Cumberland
240-732 Mount Airy
240-734 Smithsburg
240-745 Damascus
240-750 Gaithersburg
240-751 Gaithersburg
240-754 Waldorf
240-755 Laurel
240-758 Laurel
240-771 Poolesville
240-772 Frederick
240-774 Lonaconing
240-775 Westernport
240-776 La Plata
240-779 Ashton
240-780 Gaithersburg
240-782 Damascus
240-784 Myersville
240-786 Laurel
240-787 Brandywine
240-793 Gaithersburg
240-801 Gaithersburg
240-803 Cumberland
240-805 Gaithersburg
240-806 Indian Head
240-808 Leonardtown
240-812 Poolesville
240-813 Gaithersburg
240-815 Frederick
240-816 Keedysville
240-817 Ashton
240-818 Myersville
240-823 Brandywine
240-831 Frederick
240-837 Hughesville
240-841 Laurel
240-844 Ridge
240-848 Gaithersburg
240-850 Hagerstown
240-856 Laurel
240-859 Ashton
240-860 Cumberland
240-862 Mount Savage
240-870 Middletown
240-877 Frederick
240-883 Ashton
240-901 La Plata
240-903 Indian Head
240-904 Laurel
240-908 Walkersville
240-912 Gaithersburg
240-913 Damascus
240-915 New Market
240-917 Laurel
240-918 Ashton
240-920 Cumberland
240-925 Leonardtown
240-938 Ashton
240-964 Cumberland
240-971 Frederick
240-972 Laurel
240-976 Damascus
240-979 Cumberland
240-985 Williamsport
240-986 Nanjemoy
240-993 Indian Head
240-996 Brunswick
240-998 Hancock