Area Code 240

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.

Active Prefixes in Area Code 240

Prefix Primary City
240-200 Maryland
240-201 Ridge
240-203 Hagerstown
240-204 Maryland
240-205 Maryland
240-206 Maryland
240-207 Clarksburg
240-208 La Plata
240-209 Indian Head
240-210 Waldorf
240-212 Oakland
240-213 Waldorf
240-214 Charlotte Hall
240-215 Frederick
240-216 Waldorf
240-217 Hagerstown
240-218 Nanjemoy
240-219 Ridge
240-220 Poolesville
240-221 Maryland
240-222 Waldorf
240-223 Maryland
240-224 Gaithersburg
240-225 Frederick
240-228 Maryland
240-229 Waldorf
240-230 Maryland
240-231 Hagerstown
240-232 Maryland
240-233 Maryland
240-234 Maryland
240-235 Maryland
240-236 Frederick
240-237 Maryland
240-238 Maryland
240-239 Leonardtown
240-241 Maryland
240-242 Maryland
240-243 Gaithersburg
240-244 Maryland
240-245 Maryland
240-246 Gaithersburg
240-247 Maryland
240-248 Ridge
240-249 Charlotte Hall
240-250 Brandywine
240-251 Maryland
240-252 Gaithersburg
240-253 Maryland
240-254 Maryland
240-255 Poolesville
240-256 Leonardtown
240-257 Nanjemoy
240-258 Ridge
240-260 Maryland
240-262 Maryland
240-263 Maryland
240-264 Beltsville
240-265 Maryland
240-266 Maryland
240-268 Maryland
240-269 Maryland
240-270 Waldorf
240-271 Maryland
240-272 Maryland
240-273 Maryland
240-274 Maryland
240-275 Grantsville
240-276 Maryland
240-277 Maryland
240-278 Laurel
240-279 Waldorf
240-280 Laurel
240-281 Maryland
240-282 Charlotte Hall
240-283 Maryland
240-284 Frostburg
240-285 Frederick
240-286 Maryland
240-287 Hancock
240-288 Thurmont
240-289 Maryland
240-290 Maryland
240-291 Hagerstown
240-292 Maryland
240-293 Maryland
240-294 Laurel
240-295 Laurel
240-296 Maryland
240-297 Maryland
240-298 Leonardtown
240-299 Waldorf
240-300 Waldorf
240-303 Maryland
240-304 Maryland
240-305 Maryland
240-306 Gaithersburg
240-307 Emmitsburg
240-308 Clarksburg
240-309 Silver Spring
240-310 Hagerstown
240-312 Maryland
240-313 Hagerstown
240-314 Maryland
240-315 Frederick
240-316 Maryland
240-317 Maryland
240-318 Maryland
240-319 Columbia
240-320 Waldorf
240-321 Oakland
240-322 Maryland
240-323 Emmitsburg
240-324 Dayton
240-325 Clarksburg
240-326 Maryland
240-327 Gaithersburg
240-328 Maryland
240-329 Hagerstown
240-330 Maryland
240-331 Maryland
240-332 Maryland
240-333 Maryland
240-334 Maryland
240-335 Maryland
240-336 Maryland
240-337 Maryland
240-338 Maryland
240-339 Maryland
240-340 Maryland
240-341 Frederick
240-342 Sandy Spring
240-343 Hancock
240-344 Frederick
240-345 Sandy Spring
240-346 Waldorf
240-347 Hagerstown
240-348 Maryland
240-349 La Plata
240-350 Maryland
240-351 Maryland
240-352 La Plata
240-353 Maryland
240-354 Maryland
240-355 Maryland
240-356 Frederick
240-357 Frederick
240-358 Clarksburg
240-359 Indian Head
240-360 Laurel
240-361 Gaithersburg
240-362 Cumberland
240-363 Maryland
240-364 Gaithersburg
240-365 Clarksburg
240-366 Williamsport
240-367 Frederick
240-368 Waldorf
240-369 Mount Airy
240-370 Maryland
240-371 Maryland
240-372 Gaithersburg
240-373 Maryland
240-374 Laurel
240-375 Maryland
240-376 Maryland
240-377 Indian Head
240-378 Cumberland
240-379 Frederick
240-380 Maryland
240-381 Maryland
240-382 Hagerstown
240-383 Maryland
240-384 Maryland
240-385 Myersville
240-386 Maryland
240-387 Maryland
240-388 Gaithersburg
240-389 Sandy Spring
240-390 Sandy Spring
240-391 Maryland
240-392 Maryland
240-393 Maryland
240-394 Mount Airy
240-395 Maryland
240-396 Maryland
240-397 Frederick
240-398 Maryland
240-399 Maryland
240-400 Maryland
240-401 Maryland
240-402 Maryland
240-403 Maryland
240-404 Gaithersburg
240-405 Frederick
240-406 Maryland
240-407 Maryland
240-408 Maryland
240-409 Frederick
240-412 Waldorf
240-413 Maryland
240-414 Maryland
240-415 Frederick
240-416 Waldorf
240-417 Maryland
240-418 Maryland
240-419 Waldorf
240-420 Hagerstown
240-421 Maryland
240-422 Frederick
240-423 Maryland
240-424 Maryland
240-425 Maryland
240-426 Maryland
240-427 Waldorf
240-428 Maryland
240-429 Maryland
240-430 Maryland
240-431 Maryland
240-432 Maryland
240-433 Maryland
240-434 Leonardtown
240-435 Waldorf
240-436 Ijamsville
240-437 Sandy Spring
240-438 Maryland
240-439 Frederick
240-440 Frederick
240-441 Maryland
240-442 Oakland
240-444 Laurel
240-445 Maryland
240-446 Frederick
240-447 Maryland
240-448 Waldorf
240-449 Gaithersburg
240-450 Maryland
240-452 Hagerstown
240-453 Maryland
240-454 Gaithersburg
240-455 Maryland
240-456 Laurel
240-457 Frederick
240-458 Waldorf
240-459 Laurel
240-460 Maryland
240-461 Maryland
240-462 Maryland
240-463 Maryland
240-464 Maryland
240-465 Maryland
240-466 Charlotte Hall
240-467 Maryland
240-468 Maryland
240-469 Hagerstown
240-470 Laurel
240-471 Maryland
240-472 Maryland
240-473 Maryland
240-474 Gaithersburg
240-475 Maryland
240-476 Maryland
240-477 Gaithersburg
240-478 Maryland
240-479 Maryland
240-480 Maryland
240-481 Maryland
240-482 Maryland
240-483 Maryland
240-485 Maryland
240-486 Maryland
240-487 Maryland
240-488 Oakland
240-489 Poolesville
240-490 Middletown
240-491 Maryland
240-492 Maryland
240-493 Maryland
240-494 Maryland
240-495 Maryland
240-497 Maryland
240-498 Maryland
240-499 Maryland
240-500 Hagerstown
240-501 Maryland
240-502 Maryland
240-503 Maryland
240-504 Maryland
240-505 Maryland
240-506 Maryland
240-507 Maryland
240-508 Maryland
240-509 Maryland
240-510 Maryland
240-512 Maryland
240-513 Hagerstown
240-514 Maryland
240-515 Maryland
240-516 Maryland
240-517 Columbia
240-518 Waldorf
240-519 Maryland
240-520 Hagerstown
240-522 Cumberland
240-523 La Plata
240-524 Laurel
240-525 Maryland
240-526 Leonardtown
240-527 Hagerstown
240-528 Maryland
240-529 Frederick
240-530 Waldorf
240-532 Maryland
240-533 Maryland
240-535 Maryland
240-536 Sandy Spring
240-538 Leonardtown
240-539 Maryland
240-541 Maryland
240-542 Maryland
240-543 Maryland
240-544 Maryland
240-545 Maryland
240-546 Maryland
240-547 Laurel
240-548 Maryland
240-550 Maryland
240-551 Maryland
240-552 Maryland
240-553 Maryland
240-554 Laurel
240-556 Maryland
240-558 Maryland
240-559 Sandy Spring
240-560 Maryland
240-561 Leonardtown
240-562 Gaithersburg
240-565 Laurel
240-566 Frederick
240-567 Maryland
240-568 Laurel
240-573 Maryland
240-575 Frederick
240-577 Leonardtown
240-578 Frederick
240-580 Cumberland
240-581 Laurel
240-582 Maryland
240-583 Beltsville
240-585 Waldorf
240-586 Frederick
240-587 Leonardtown
240-593 Laurel
240-595 Maryland
240-597 Gaithersburg
240-599 Maryland
240-600 Maryland
240-601 Maryland
240-602 Maryland
240-603 Maryland
240-604 Maryland
240-605 Maryland
240-606 Maryland
240-607 Upper Marlboro
240-608 Frederick
240-609 Cumberland
240-612 Maryland
240-613 Maryland
240-614 Maryland
240-615 Maryland
240-616 Maryland
240-617 Maryland
240-618 Maryland
240-619 Maryland
240-620 Maryland
240-621 Maryland
240-623 Maryland
240-624 Maryland
240-625 Hagerstown
240-626 Frederick
240-627 Maryland
240-629 Frederick
240-630 Maryland
240-631 Gaithersburg
240-632 Gaithersburg
240-633 Maryland
240-638 Maryland
240-640 Waldorf
240-641 Maryland
240-643 Maryland
240-644 Maryland
240-645 Maryland
240-646 Laurel
240-650 Maryland
240-651 Frederick
240-652 Charlotte Hall
240-654 Gaithersburg
240-657 Frederick
240-660 Maryland
240-661 Maryland
240-662 Maryland
240-666 Nanjemoy
240-667 Maryland
240-668 Clarksburg
240-669 Maryland
240-670 Maryland
240-671 Maryland
240-672 Maryland
240-674 Frederick
240-675 Myersville
240-676 Maryland
240-678 Maryland
240-681 Brandywine
240-682 Waldorf
240-683 Gaithersburg
240-684 Maryland
240-685 Upper Marlboro
240-686 Gaithersburg
240-687 Maryland
240-688 Maryland
240-691 Maryland
240-694 Maryland
240-695 Maryland
240-696 Maryland
240-699 Frederick
240-701 Maryland
240-702 Gaithersburg
240-704 Maryland
240-705 Maryland
240-706 Maryland
240-707 Hagerstown
240-708 Columbia
240-712 Columbia
240-713 Laurel
240-714 Maryland
240-715 Maryland
240-716 Maryland
240-718 Maryland
240-720 Gaithersburg
240-722 Sandy Spring
240-723 Maryland
240-724 Maryland
240-725 Maryland
240-727 Cumberland
240-731 Maryland
240-734 Hagerstown
240-737 Maryland
240-740 Maryland
240-743 Maryland
240-744 Maryland
240-745 Clarksburg
240-747 Maryland
240-750 Gaithersburg
240-751 Gaithersburg
240-752 Maryland
240-753 Maryland
240-754 Waldorf
240-755 Laurel
240-757 Maryland
240-760 Maryland
240-762 Maryland
240-763 Maryland
240-764 Maryland
240-765 Maryland
240-766 Maryland
240-767 Maryland
240-770 Maryland
240-772 Frederick
240-773 Maryland
240-774 Lonaconing
240-775 Luke
240-776 La Plata
240-777 Maryland
240-778 Maryland
240-779 Sandy Spring
240-780 Gaithersburg
240-781 Maryland
240-782 Clarksburg
240-783 Maryland
240-784 Myersville
240-786 Laurel
240-787 Brandywine
240-788 Maryland
240-790 Maryland
240-793 Gaithersburg
240-794 Maryland
240-800 Maryland
240-801 Gaithersburg
240-802 Maryland
240-803 Cumberland
240-804 Maryland
240-806 Indian Head
240-808 Leonardtown
240-812 Poolesville
240-813 Gaithersburg
240-816 Hagerstown
240-818 Smithsburg
240-821 Maryland
240-823 Brandywine
240-826 Maryland
240-832 Maryland
240-833 Maryland
240-837 Maryland
240-838 Maryland
240-839 Maryland
240-841 Laurel
240-842 Maryland
240-843 Maryland
240-844 Ridge
240-845 Maryland
240-846 Maryland
240-848 Gaithersburg
240-855 Maryland
240-857 Maryland
240-863 Maryland
240-864 Maryland
240-865 Maryland
240-868 Maryland
240-876 Maryland
240-880 Maryland
240-882 Maryland
240-883 Sandy Spring
240-888 Maryland
240-892 Maryland
240-893 Maryland
240-895 Maryland
240-897 Maryland
240-898 Maryland
240-899 Maryland
240-900 Maryland
240-901 La Plata
240-903 Indian Head
240-912 Gaithersburg
240-920 Cumberland
240-925 Leonardtown
240-929 Maryland
240-938 Ashton
240-949 Maryland
240-964 Cumberland
240-965 Maryland
240-970 Maryland
240-972 Columbia
240-976 Maryland
240-979 Cumberland
240-986 Nanjemoy
240-988 Maryland
240-993 Indian Head
240-994 Maryland
240-997 Maryland