Area code 559
area code for Fresno and Visalia, California
Area code 559 is a telephone area code in the state of California in the United States. It serves the central part of the state, including cities like Fresno, Clovis, Visalia, and Hanford. It was created on November 14, 1998, when it was split from area code 209. It will be overlaid by 357 in 2025.[1]