Clovis, California
Area code 559
Where Is Area Code 559?
Area code 559 serves central California, mainly the San Joaquin Valley and nearby Sierra Nevada foothill communities. It covers a large part of the central inland region of the state, including Fresno and much of the surrounding area.
Major cities in area code 559 include Fresno, Clovis, Madera, Hanford, Visalia, Tulare, and Porterville. The area code serves parts of several counties, including Fresno County, Madera County, Kings County, Tulare County, and Mariposa County.
Area code 559 includes communities near well-known California landmarks and natural areas. Its service region reaches agricultural parts of the San Joaquin Valley and communities that provide access to places such as Yosemite National Park, Sequoia National Park, and Kings Canyon National Park.
History of Area Code 559
Area code 559 was created on November 14, 1998. It was split from area code 209 as telephone demand grew in central California.
Area code 559 is a split area code, not an overlay. Public Utilities Commission records from California show that 559 was assigned to the Fresno area and nearby central valley communities after the split from 209.
Key Facts About Area Code 559
- Area code 559 is in California, and Fresno is the largest city in the numbering plan area.
- Area code 559 includes Clovis, which is located in Fresno County in central California.
- Area code 559 is in the Pacific Time Zone and observes Pacific Standard Time and Pacific Daylight Time.
- Area code 559 was created on November 14, 1998, in a split from area code 209.
- Area code 559 is a geographic area code used for local telephone numbers, not a toll-free code.
- Area code 559 serves much of the central San Joaquin Valley, including cities such as Fresno, Visalia, Hanford, and Madera.
- Area code 559 covers a region that includes California State University, Fresno, commonly called Fresno State.
- Area code 559 serves communities near major natural landmarks, including Yosemite National Park and Sequoia National Park.
Frequently Asked Questions
What state is area code 559 in?
Area code 559 is in California.
What major cities use area code 559?
Major cities in area code 559 include Fresno, Clovis, Madera, Hanford, Visalia, Tulare, and Porterville.
Is area code 559 a toll-free number?
No. Area code 559 is a geographic area code.
Last updated: March 2026