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Area Code 301 Information and Location Details

Area code 301 serves the state of Maryland. This area code was assigned on January 1st, 1947. On January 1st, 1947 it went into service. 301 is a General Purpose Code. 301 service area does overlap with 240 area codes. Dialing pattern for local calls within the same NPA (area code) is 10D.

Area Code 301 Has 259 Exchanges

Exchange City
301-200 Indian Head
301-208 Gaithersburg
301-210 Laurel
301-216 Gaithersburg
301-223 Williamsport
301-228 Frederick
301-232 Ashton
301-242 Brandywine
301-245 Bittinger
301-246 Nanjemoy
301-247 Leonardtown
301-250 Gaithersburg
301-252 Gaithersburg
301-253 Damascus
301-256 Laurel
301-260 Ashton
301-264 Mount Savage
301-266 Waldorf
301-268 Cumberland
301-271 Thurmont
301-274 Hughesville
301-290 Mechanicsville
301-293 Myersville
301-302 Hagerstown
301-304 Walkersville
301-305 Frederick
301-310 Laurel
301-317 Laurel
301-323 Laurel
301-329 Ashton
301-330 Gaithersburg
301-331 Hagerstown
301-334 Oakland
301-337 Gaithersburg
301-338 Cumberland
301-349 Poolesville
301-355 Gaithersburg
301-356 Laurel
301-359 Westernport
301-360 Frederick
301-362 Laurel
301-363 Damascus
301-366 Gaithersburg
301-368 Damascus
301-370 Gaithersburg
301-371 Middletown
301-373 Leonardtown
301-374 Waldorf
301-375 Indian Head
301-376 Laurel
301-377 Laurel
301-378 Frederick
301-387 Oakland
301-391 Damascus
301-392 La Plata
301-393 Hagerstown
301-395 Laurel
301-396 Waldorf
301-399 Waldorf
301-401 Frederick
301-407 Gaithersburg
301-414 Damascus
301-416 Myersville
301-418 Frederick
301-421 Ashton
301-432 Keedysville
301-447 Emmitsburg
301-453 Kitzmiller
301-462 Myersville
301-463 Lonaconing
301-465 Myersville
301-471 Frederick
301-472 Mechanicsville
301-473 Frederick
301-475 Leonardtown
301-476 Ashton
301-478 Flintstone
301-481 Leonardtown
301-482 Damascus
301-483 Laurel
301-487 Myersville
301-490 Laurel
301-491 Hagerstown
301-497 Laurel
301-498 Laurel
301-501 Oakland
301-508 Myersville
301-514 Frederick
301-515 Gaithersburg
301-519 Gaithersburg
301-524 Frederick
301-525 Gaithersburg
301-527 Gaithersburg
301-528 Gaithersburg
301-532 Laurel
301-533 Oakland
301-534 Indian Head
301-535 Waldorf
301-536 Leonardtown
301-539 La Plata
301-540 Gaithersburg
301-542 Waldorf
301-543 Laurel
301-549 Ashton
301-553 Waldorf
301-556 Gaithersburg
301-569 Gaithersburg
301-570 Ashton
301-573 Hagerstown
301-575 Laurel
301-579 Brandywine
301-582 Hagerstown
301-591 Gaithersburg
301-596 Laurel
301-597 Hancock
301-600 Frederick
301-604 Laurel
301-606 Frederick
301-607 Damascus
301-609 Waldorf
301-616 Oakland
301-617 Laurel
301-619 Frederick
301-620 Frederick
301-624 Frederick
301-631 Frederick
301-632 Waldorf
301-635 Myersville
301-638 Waldorf
301-639 Frederick
301-643 Waldorf
301-644 Frederick
301-645 Waldorf
301-653 Waldorf
301-658 Ashton
301-659 Waldorf
301-660 Keedysville
301-662 Frederick
301-663 Frederick
301-665 Hagerstown
301-667 Myersville
301-668 Frederick
301-671 Hagerstown
301-673 Frederick
301-676 Frederick
301-678 Hancock
301-682 Frederick
301-684 Indian Head
301-685 Damascus
301-687 Frostburg
301-689 Frostburg
301-690 Leonardtown
301-691 Poolesville
301-693 Frederick
301-694 Frederick
301-695 Frederick
301-696 Frederick
301-697 Cumberland
301-698 Frederick
301-703 Mount Airy
301-705 Waldorf
301-707 Cumberland
301-708 Laurel
301-710 Waldorf
301-712 Frederick
301-714 Hagerstown
301-720 Brandywine
301-722 Cumberland
301-723 Cumberland
301-724 Cumberland
301-725 Laurel
301-729 Cumberland
301-730 Myersville
301-732 Frederick
301-733 Hagerstown
301-739 Hagerstown
301-740 Gaithersburg
301-741 Laurel
301-743 Indian Head
301-744 Indian Head
301-745 Hagerstown
301-746 Friendsville
301-748 Frederick
301-750 Friendsville
301-751 Waldorf
301-752 Waldorf
301-759 Cumberland
301-764 Waldorf
301-766 Hagerstown
301-769 Leonardtown
301-774 Ashton
301-776 Laurel
301-777 Cumberland
301-781 Frostburg
301-782 Brandywine
301-783 Cumberland
301-784 Cumberland
301-788 Frederick
301-790 Hagerstown
301-791 Hagerstown
301-797 Hagerstown
301-798 Damascus
301-799 Keedysville
301-800 Hagerstown
301-804 Ashton
301-810 Buckeystown
301-815 Frederick
301-818 Waldorf
301-820 Gaithersburg
301-821 Laurel
301-824 Smithsburg
301-829 Mount Airy
301-831 Damascus
301-834 Brunswick
301-835 Hagerstown
301-842 Clear Spring
301-845 Walkersville
301-846 Frederick
301-848 Waldorf
301-849 Oakland
301-854 Ashton
301-857 Clear Spring
301-859 Oakland
301-861 Waldorf
301-865 New Market
301-869 Gaithersburg
301-872 Ridge
301-874 Buckeystown
301-875 Laurel
301-876 Cumberland
301-882 New Market
301-884 Mechanicsville
301-885 Waldorf
301-895 Grantsville
301-898 Frederick
301-904 Leonardtown
301-914 Oakland
301-916 Gaithersburg
301-926 Gaithersburg
301-932 Waldorf
301-934 La Plata
301-936 Hagerstown
301-944 Gaithersburg
301-947 Gaithersburg
301-956 Gaithersburg
301-957 Laurel
301-963 Gaithersburg
301-964 Myersville
301-969 Brunswick
301-972 Gaithersburg
301-974 Laurel
301-977 Gaithersburg
301-987 Gaithersburg
301-988 Hagerstown
301-990 Gaithersburg
301-991 Hagerstown
301-992 Hagerstown
301-997 Leonardtown
301-999 Hagerstown