Area Code 240 Details

Area code 240 serves parts of Maryland, including Cumberland, Frederick, Hagerstown, and Gaithersburg. It was created in 1997 as an overlay to area code 301.

AreaCode/Prefix (Exchange) Location
240-201 Ridge, MD
240-203 Hagerstown, MD
240-207 Damascus, MD
240-208 La Plata, MD
240-209 Indian Head, MD
240-210 Waldorf, MD
240-212 Oakland, MD
240-213 Waldorf, MD
240-214 Mechanicsville, MD
240-215 Frederick, MD
240-216 Waldorf, MD
240-217 Hagerstown, MD
240-218 Nanjemoy, MD
240-220 Poolesville, MD
240-222 Waldorf, MD
240-224 Gaithersburg, MD
240-225 Frederick, MD
240-229 Waldorf, MD
240-230 Hughesville, MD
240-231 Hagerstown, MD
240-236 Frederick, MD
240-239 Leonardtown, MD
240-243 Gaithersburg, MD
240-246 Gaithersburg, MD
240-248 Ridge, MD
240-249 Mechanicsville, MD
240-250 Brandywine, MD
240-252 Gaithersburg, MD
240-254 Hughesville, MD
240-255 Poolesville, MD
240-256 Leonardtown, MD
240-257 Nanjemoy, MD
240-258 Ridge, MD
240-264 Beltsville, MD
240-270 Waldorf, MD
240-275 Grantsville, MD
240-278 Laurel, MD
240-279 Waldorf, MD
240-280 Laurel, MD
240-282 Mechanicsville, MD
240-284 Frostburg, MD
240-285 Frederick, MD
240-287 Hancock, MD
240-288 Thurmont, MD
240-291 Hagerstown, MD
240-294 Laurel, MD
240-295 Laurel, MD
240-298 Leonardtown, MD
240-299 Waldorf, MD
240-300 Waldorf, MD
240-306 Gaithersburg, MD
240-307 Emmitsburg, MD
240-308 Damascus, MD
240-309 Leonardtown, MD
240-310 Hagerstown, MD
240-313 Hagerstown, MD
240-315 Frederick, MD
240-319 Columbia, MD
240-320 Waldorf, MD
240-321 Oakland, MD
240-323 Emmitsburg, MD
240-324 Clarksville, MD
240-325 Damascus, MD
240-327 Gaithersburg, MD
240-329 Hagerstown, MD
240-341 Adamstown, MD
240-342 Sandy Spring, MD
240-343 Hancock, MD
240-344 Frederick, MD
240-345 Sandy Spring, MD
240-346 Waldorf, MD
240-347 Hagerstown, MD
240-349 La Plata, MD
240-352 La Plata, MD
240-356 Frederick, MD
240-357 Frederick, MD
240-358 Damascus, MD
240-359 Indian Head, MD
240-360 Silver Spring, MD
240-361 Gaithersburg, MD
240-362 Cumberland, MD
240-364 Gaithersburg, MD
240-365 Damascus, MD
240-366 Williamsport, MD
240-367 Frederick, MD
240-368 Waldorf, MD
240-369 Mount Airy, MD
240-372 Gaithersburg, MD
240-374 Laurel, MD
240-376 Hughesville, MD
240-377 Indian Head, MD
240-378 Cumberland, MD
240-379 Frederick, MD
240-382 Hagerstown, MD
240-385 Myersville, MD
240-388 Gaithersburg, MD
240-389 Sandy Spring, MD
240-390 Sandy Spring, MD
240-394 Mount Airy, MD
240-397 Frederick, MD
240-404 Gaithersburg, MD
240-405 Frederick, MD
240-409 Frederick, MD
240-412 Waldorf, MD
240-415 Frederick, MD
240-416 Waldorf, MD
240-419 Waldorf, MD
240-420 Hagerstown, MD
240-422 Frederick, MD
240-427 Waldorf, MD
240-434 Leonardtown, MD
240-435 Waldorf, MD
240-436 Ijamsville, MD
240-437 Sandy Spring, MD
240-439 Frederick, MD
240-440 Frederick, MD
240-442 Oakland, MD
240-444 Laurel, MD
240-446 Frederick, MD
240-448 Waldorf, MD
240-449 Gaithersburg, MD
240-452 Hagerstown, MD
240-454 Gaithersburg, MD
240-456 Laurel, MD
240-457 Frederick, MD
240-458 Waldorf, MD
240-459 Laurel, MD
240-466 Mechanicsville, MD
240-469 Hagerstown, MD
240-470 Laurel, MD
240-477 Gaithersburg, MD
240-488 Oakland, MD
240-489 Poolesville, MD
240-490 Middletown, MD
240-500 Hagerstown, MD
240-513 Hagerstown, MD
240-518 Waldorf, MD
240-520 Hagerstown, MD
240-522 Cumberland, MD
240-523 La Plata, MD
240-524 Laurel, MD
240-526 Leonardtown, MD
240-527 Hagerstown, MD
240-528 Hughesville, MD
240-529 Frederick, MD
240-530 Silver Spring, MD
240-536 Sandy Spring, MD
240-538 Leonardtown, MD
240-547 Laurel, MD
240-554 Laurel, MD
240-559 Sandy Spring, MD
240-561 Leonardtown, MD
240-565 Laurel, MD
240-566 Frederick, MD
240-568 Laurel, MD
240-575 Frederick, MD
240-577 Leonardtown, MD
240-578 Frederick, MD
240-580 Cumberland, MD
240-581 Laurel, MD
240-583 Beltsville, MD
240-585 Waldorf, MD
240-586 Frederick, MD
240-587 Leonardtown, MD
240-593 Laurel, MD
240-597 Gaithersburg, MD
240-607 Waldorf, MD
240-608 Frederick, MD
240-617 Silver Spring, MD
240-625 Hagerstown, MD
240-626 Frederick, MD
240-629 Frederick, MD
240-631 Gaithersburg, MD
240-632 Gaithersburg, MD
240-640 Waldorf, MD
240-646 Laurel, MD
240-651 Frederick, MD
240-652 Mechanicsville, MD
240-654 Gaithersburg, MD
240-668 Damascus, MD
240-674 Frederick, MD
240-675 Myersville, MD
240-681 Washington
240-682 Waldorf, MD
240-683 Gaithersburg, MD
240-685 Brandywine, MD
240-686 Gaithersburg, MD
240-699 Adamstown, MD
240-707 Hagerstown, MD
240-708 Columbia, MD
240-712 Columbia, MD
240-713 Laurel, MD
240-720 Gaithersburg, MD
240-722 Sandy Spring, MD
240-727 Cumberland, MD
240-734 Hagerstown, MD
240-745 Damascus, MD
240-750 Gaithersburg, MD
240-751 Gaithersburg, MD
240-754 Waldorf, MD
240-755 Laurel, MD
240-772 Frederick, MD
240-776 La Plata, MD
240-779 Sandy Spring, MD
240-780 Gaithersburg, MD
240-782 Damascus, MD
240-784 Myersville, MD
240-786 Laurel, MD
240-787 Brandywine, MD
240-793 Gaithersburg, MD
240-801 Silver Spring, MD
240-803 Cumberland, MD
240-812 Poolesville, MD
240-813 Gaithersburg, MD
240-818 Smithsburg, MD
240-823 Brandywine, MD
240-837 Hughesville, MD
240-841 Laurel, MD
240-844 Ridge, MD
240-848 Gaithersburg, MD
240-883 Sandy Spring, MD
240-901 Silver Spring, MD
240-903 Silver Spring, MD
240-912 Gaithersburg, MD
240-920 Cumberland, MD
240-925 Leonardtown, MD
240-938 Ashton, MD
240-964 Cumberland, MD
240-976 Chevy Chase
240-979 Cumberland, MD
240-986 Nanjemoy, MD
240-993 Indian Head, MD