Area Code 920
(534 and 715) - (274 and 920)
(353 and 608)
Area Code 920 History:
Area code 920 was officially put into service. Area code 920 was created from a split of area code 414.
Area code 274 was put into service as an all services overlay of area code 920. Ten digit dialing (area code + seven digit number) is necessary in the 274/920 overlay because different homes in the same geographic area can have the same seven digit phone number but each would have a different area code.
Counties in Wisconsin within area code 920 include:
Brown County, Calumet County, Columbia County, Dodge County, Door County, Fond du Lac County, Green Lake County, Jefferson County, Kewaunee County, Manitowoc County, Marinette County, Marquette County, Oconto County, Outagamie County, Shawano County, Sheboygan County, Waupaca County, Waushara County, and Winnebago County.
Major cities or places in Wisconsin within area code 920 include:
Area code 920 serves most of northeastern Wisconsin including the larger cities and communities of Appleton, De Pere, Fond Du Lac, Green Bay, Manitowoc, Neenah, Oshkosh, Sheboygan, and Watertown in addition to many smaller communities within the area code 920 service area.