Area Code 559 History:
Area code 559 was put into service. Area code 559 was created from a split of area code 209.
Counties in California within area code 559 include:
Fresno County, Kings County, Madera County, and Tulare County.
Major cities or places in California within area code 559 include:
Area code 559 serves an area of the California's Central Valley, which includes the larger cities and communities of Clovis, Fresno, Hanford, Madera, Porterville, Reedley, Tulare and Visalia in addition to many smaller communities within the area code 559 service area.