657 Area Code: Anaheim, California

Anaheim is the primary city of the 657 area code, which overlays portions of Orange County alongside the long-established 714. Anaheim sits in the northern part of Orange County, organized in part around the Disneyland Resort and a substantial convention and sports district, with surrounding postwar residential neighborhoods extending into Garden Grove, Buena Park, Fullerton, and the cities that grew up alongside them through the second half of the twentieth century. The 657 designation, a member of the North American Numbering Plan, has been filling with allocations as Orange County number demand has expanded.

A long catalog of California cities — Bakersfield, Chico, Concord, Daly City, and many more — appears in the directory's records tied to 657 numbers. None of those sit inside the 657 footprint. Their appearance reflects California's standard high number mobility through porting, prior registration, and address linkages that don't filter on area-code geography. The directory currently documents 114 distinct prefixes within 657 in detail, a working subset of the live prefix population that the code carries.

Anaheim's home values come in well above the US median, reflecting the broader Orange County housing pattern that has reset prices across most of the county over the past two decades. Median household income lands above the national reading, the city's median age skews a touch younger than the US figure, and population places Anaheim among the larger Orange County cities — substantial enough to anchor its own civic identity within the metropolitan landscape.