Wisconsin Area Code Information

Wisconsin Area Codes


Wisconsin Area Code Overlays
(534 and 715)


Wisconsin is currently using six area codes. Wisconsin currently has one area code 534 which was implemented on August 14, 2010 to provide numbering relief as an area code overlay for area code 715. Another area code is assigned as an overlay area code but is not yet in service.

Wisconsin originally had two area codes, 414 and 715, when the numbering system was established in 1947. By 1955 Wisconsin experienced sufficient growth in population and telephone use to need an additional area code. To meet this increase in demand area codes 414 and 715 were split in 1955 to form area code 608. It was forty-two years later before the demand for new numbers in Wisconsin required a second split of area code 414 to form area code 920 in 1997. Two years later in 1999 area code 414 was split a third time to form area code 262.

Changes and History of Wisconsin Area Codes:

01/01/1947
Area code 414 was put into service. In 1955 area code 414 was split to form a portion of area code 608. In 1997 area code 414 was split to form area code 920. In 1999 area code 414 was split to form area code 262.

01/01/1947
Area code 715 was put into service. In 1955 area code 715 was split to form a portion of area code 608.

01/01/1955
Area code 608 was put into service. Area code 608 was created from a split of area codes 414 and 715.

Wisconsin Area Code Map



07/26/1997
Area code 920 was put into service. Area code 920 was created from a split of area code 414.

09/25/1999
Area code 262 was put into service. Area code 262 was created from a split of area code 414.

08/14/2010
Area code 534 was put into service as an overlay for area code 715.

not in service
Area code 274 is proposed as an overlay for area code 920 but is not yet in service.






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