Biola, CA is currently using one area code which is area code 559. Area code 559 was created from a split of area code 209 and put into service on November 14, 1998.
In addition to Biola, CA 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.
Biola, CA is located in Fresno County and observes the Pacific Time Zone. View our Times by Area Code tool.