The area code 559 is located in Clovis, California.
Area code 559 serves Clovis, California and much of the central San Joaquin Valley. Clovis sits in northeastern Fresno County, just northeast of Fresno, placing it close to the Sierra Nevada foothills. This calling area links farming towns, college campuses, and growing suburbs across one of California’s most productive regions. It’s a key code for local businesses, schools, healthcare, and government offices.
Major cities and communities in area code 559 include:
The 559 service area also reaches gateway communities for Sequoia and Kings Canyon National Parks, making it common on calls related to outdoor travel and park services. Landmarks tied to this code include California State University, Fresno (Fresno State), Fresno Yosemite International Airport, and Old Town Clovis. These hubs connect the region’s agriculture, education, and tourism. Most 559 numbers operate on Pacific Time.
“559 was created on November 14, 1998, in a split from 209.” — North American Numbering Plan Administration (NANPA)
That split added capacity for the Valley’s growth and helped keep local 559 phone numbers available for residents and businesses. Today, the code primarily covers parts of Fresno, Madera, Kings, and Tulare counties. Clovis, known as the “Gateway to the Sierras,” benefits from 559’s wide reach across city neighborhoods and rural communities. If you see a 559 prefix, it usually points to central California’s heartland and its nearby mountain entrances.