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.

Area Code & Prefix Location
240-200 Washington, Md
240-201 Washington, Md
240-206 Washington, Md
240-207 Washington, Md
240-208 Washington, Md
240-209 Washington, Md
240-212 Mount Airy, Md
240-213 Washington, Md
240-214 Washington, Md
240-215 Ijamsville, Md
240-216 Washington, Md
240-217 Frederick, Md
240-218 Washington, Md
240-223 Washington, Md
240-225 Mount Airy, Md
240-228 Laurel, Md
240-229 Washington, Md
240-230 Washington, Md
240-232 Washington, Md
240-233 Washington, Md
240-236 Frederick, Md
240-237 Washington, Md
240-239 Damascus, Md
240-243 Washington, Md
240-247 Washington, Md
240-249 Washington, Md
240-253 Washington, Md
240-254 Washington, Md
240-256 Washington, Md
240-257 Washington, Md
240-258 Washington, Md
240-260 Washington, Md
240-262 Washington, Md
240-268 Washington, Md
240-270 Washington, Md
240-273 Washington, Md
240-279 Damascus, Md
240-284 Frederick, Md
240-285 Frederick, Md
240-287 Mount Airy, Md
240-288 Frederick, Md
240-290 Washington, Md
240-291 Monrovia, Md
240-294 Washington, Md
240-298 Washington, Md
240-299 Washington, Md
240-300 Washington, Md
240-306 Washington, Md
240-307 Monrovia, Md
240-309 Laurel, Md
240-310 Cumberland, Md
240-315 Frederick, Md
240-318 Clinton, Md
240-319 Baltimore, Md
240-320 Washington, Md
240-321 Cumberland, Md
240-324 Baltimore, Md
240-325 Damascus, Md
240-327 Damascus, Md
240-329 Frederick, Md
240-333 Washington, Md
240-334 Washington, Md
240-336 Damascus, Md
240-339 Washington, Md
240-341 Frederick, Md
240-343 Frederick, Md
240-344 Monrovia, Md
240-345 Baltimore, Md
240-346 Washington, Md
240-349 Washington, Md
240-356 Frederick, Md
240-357 Frederick, Md
240-362 Cresaptown, Md
240-364 Washington, Md
240-365 Laurel, Md
240-366 Monrovia, Md
240-367 Frederick, Md
240-374 Washington, Md
240-377 Washington, Md
240-378 Mount Airy, Md
240-379 Frederick, Md
240-382 Frederick, Md
240-387 Washington, Md
240-389 Washington, Md
240-391 Washington, Md
240-394 Monrovia, Md
240-396 Washington, Md
240-397 Frederick, Md
240-399 Washington, Md
240-404 Washington, Md
240-405 Frederick, Md
240-407 Washington, Md
240-409 Monrovia, Md
240-412 Washington, Md
240-415 Frederick, Md
240-419 Washington, Md
240-422 Frederick, Md
240-425 Vienna, Md
240-427 Washington, Md
240-428 Washington, Md
240-429 Adelphi, Md
240-431 Washington, Md
240-434 Washington, Md
240-435 Washington, Md
240-437 Washington, Md
240-439 Frederick, Md
240-440 Monrovia, Md
240-442 Thayerville, Md
240-446 Frederick, Md
240-448 Washington, Md
240-455 Sterling, Md
240-456 Laurel, Md
240-457 Frederick, Md
240-458 Washington, Md
240-471 Washington, Md
240-488 Cumberland, Md
240-489 Washington, Md
240-490 Frederick, Md
240-491 Washington, Md
240-494 Washington, Md
240-495 Adelphi, Md
240-496 Washington, Md
240-500 Frederick, Md
240-509 Baltimore, Md
240-510 Washington, Md
240-512 Baltimore, Md
240-517 Baltimore, Md
240-518 Washington, Md
240-522 Cumberland, Md
240-523 Washington, Md
240-528 Washington, Md
240-529 Frederick, Md
240-532 Adelphi, Md
240-533 Washington, Md
240-538 Washington, Md
240-548 Washington, Md
240-549 Frederick, Md
240-553 Washington, Md
240-554 Washington, Md
240-559 Washington, Md
240-560 Washington, Md
240-561 Washington, Md
240-562 Washington, Md
240-565 Baltimore, Md
240-566 Frederick, Md
240-568 Laurel, Md
240-572 Washington, Md
240-573 Washington, Md
240-575 Frederick, Md
240-577 Washington, Md
240-578 Frederick, Md
240-580 Cumberland, Md
240-581 Washington, Md
240-585 Washington, Md
240-586 Frederick, Md
240-587 Washington, Md
240-592 Laurel, Md
240-593 Baltimore, Md
240-595 Adelphi, Md
240-599 Washington, Md
240-607 Washington, Md
240-608 Frederick, Md
240-609 Monrovia, Md
240-612 Laurel, Md
240-623 Washington, Md
240-626 Frederick, Md
240-627 Washington, Md
240-629 Frederick, Md
240-630 Washington, Md
240-638 Washington, Md
240-640 Washington, Md
240-641 Adelphi, Md
240-644 Washington, Md
240-645 Washington, Md
240-646 Washington, Md
240-650 Adelphi, Md
240-651 Frederick, Md
240-652 Washington, Md
240-653 Baltimore, Md
240-666 Washington, Md
240-667 Washington, Md
240-674 Frederick, Md
240-675 Monrovia, Md
240-681 Washington, Md
240-685 Washington, Md
240-686 Germantown, Md
240-688 Adelphi, Md
240-691 Washington, Md
240-707 Monrovia, Md
240-708 Baltimore, Md
240-712 Baltimore, Md
240-715 Washington, Md
240-718 Washington, Md
240-719 Adelphi, Md
240-720 Washington, Md
240-722 Washington, Md
240-723 Adelphi, Md
240-724 Washington, Md
240-727 Monrovia, Md
240-732 Monrovia, Md
240-737 Washington, Md
240-740 Vienna, Md
240-744 Washington, Md
240-745 Washington, Md
240-747 Washington, Md
240-755 Baltimore, Md
240-763 Baltimore, Md
240-764 Washington, Md
240-765 Washington, Md
240-766 Washington, Md
240-767 Washington, Md
240-772 Frederick, Md
240-776 Washington, Md
240-778 Washington, Md
240-779 Washington, Md
240-780 Washington, Md
240-781 Washington, Md
240-782 Washington, Md
240-784 Frederick, Md
240-786 Washington, Md
240-787 Washington, Md
240-788 Washington, Md
240-790 Washington, Md
240-794 Washington, Md
240-803 Monrovia, Md
240-804 Washington, Md
240-806 Washington, Md
240-808 Washington, Md
240-812 Washington, Md
240-813 Washington, Md
240-815 Frederick, Md
240-823 Washington, Md
240-825 Adelphi, Md
240-833 Washington, Md
240-837 Washington, Md
240-839 Adelphi, Md
240-841 Baltimore, Md
240-842 Baltimore, Md
240-843 Baltimore, Md
240-844 Washington, Md
240-845 Washington, Md
240-846 Washington, Md
240-856 Baltimore, Md
240-857 Laurel, Md
240-860 Laurel, Md
240-863 Laurel, Md
240-864 Washington, Md
240-865 Baltimore, Md
240-868 Washington, Md
240-880 Washington, Md
240-883 Washington, Md
240-892 Washington, Md
240-897 Washington, Md
240-898 Washington, Md
240-900 Vienna, Md
240-904 Baltimore, Md
240-906 Laurel, Md
240-920 Frederick, Md
240-925 Adelphi, Md
240-929 Washington, Md
240-949 Washington, Md
240-964 Cumberland, Md
240-965 Washington, Md
240-970 Washington, Md
240-972 Baltimore, Md
240-976 Laurel, Md
240-979 Frederick, Md
240-986 Washington, Md
240-993 Washington, Md