Area Zip Codes - State of Maryland
Zip Codes - Annapolis
21401, 21402, 21403, 21404, 21405, 21409, 21411, 21412

Zip Codes - Baltimore
21201, 21202, 21203, 21204, 21205, 21206, 21207, 21208, 21209, 21210, 21211, 21212, 21213
21214, 21215, 21216, 21217, 21218, 21219, 21220, 21221, 21222, 21223, 21224, 21225, 21226
21227, 21228, 21229, 21230, 21231, 21233, 21234, 21235, 21236, 21237, 21239, 21240, 21241
21244, 21250, 21251, 21252, 21263, 21264, 21265, 21268, 21270, 21273, 21274, 21275, 21278
21279, 21280, 21281, 21282, 21283, 21284, 21285, 21286, 21287, 21288, 21289, 21290, 21297, 21298

Zip Codes - Bowie
20715, 20716, 20717, 20718, 20719, 20720, 20721

Zip Codes - Frederick
21701, 21702, 21703, 21704, 21705, 21709

Zip Codes - Gaithersburg
20877, 20878, 20879, 20882, 20883, 20884, 20885, 20886, 20898, 20899

Zip Codes - Hagerstown
21740, 21741, 21742, 21746, 21747, 21748, 21749

Zip Codes - Rockville
20847, 20848, 20849, 20850, 20851, 20852, 20853, 20854, 20855, 20857, 20859

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