List of Maryland area codes

Last updated

The blue area is assigned area codes 301, 240, and 227; the red area is area codes 410, 443 and 667 Area code 410.png
The blue area is assigned area codes 301, 240, and 227; the red area is area codes 410, 443 and 667

The state of Maryland is served by the following area codes:

Area codesNumbering plan area
227
240
301 		western Maryland, including its suburbs of Washington, D.C.
410
443
667 		eastern Maryland including Baltimore and Annapolis
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