Area code 657 is an overlay of 714, serving northern Orange County, California. It was introduced in 2008 due to growing demand in a densely populated region that includes Anaheim, Santa Ana, and Fullerton. Known for Disneyland, beaches, and a diverse suburban population, the area has significant cultural and economic influence in Southern California. Ten-digit dialing is required. While newer, 657 is firmly tied to Orange County’s ongoing growth and vitality.