Area codes 410 and 443

Maryland comprises the red and blue area of the map; the red area is covered by area codes 410 and 443

North American area codes 410 and 443 are state of Maryland telephone area codes which serve the communities of Baltimore, North East, Rising Sun, the state capital of Annapolis, and the Eastern Shore. Area code 410 was split from area code 301 on October 6, 1991. The overlay area code, 443, was introduced on June 1, 1997.

The counties and independent city served by these area codes include:

State of Maryland Area Codes: 240, 301, 410, 443
	North: 717, 484/610/835
West: 301/240	area codes 410/443	East: 302
	South: 757
State of Delaware Area Code: 302
Commonwealth of Pennsylvania Area Codes: 215, 267, 412, 484, 570, 610, 717, 724, 814, 835, 878
Commonwealth of Virginia Area Codes: 276, 434, 540, 571/703, 757, 804