747 Area Code: Los Angeles, California

The 747 code is one of several area codes that serve Los Angeles, layered onto the same geography long covered by the older 818 in the San Fernando Valley. The 818-and-747 footprint takes in the broad valley north of the Santa Monica Mountains — Burbank, Glendale, North Hollywood, Van Nuys, Sherman Oaks, and the surrounding postwar communities — along with parts of the city of Los Angeles that extend into the Valley itself. The 747 designation, a member of the North American Numbering Plan, has been filling with allocations as Valley number demand has continued to grow.

Other California cities — Anaheim, Bakersfield, Chico, Concord, and many more — turn up in the directory's records linked to 747 numbers. None of those are inside the 747 footprint. The overlap reflects California's standard high number mobility through porting, prior registration, and the public-record sources that cross-link addresses across cities. The directory currently documents 95 distinct prefixes within 747 in detail, a working subset of the prefix population the code actually carries.

Los Angeles's housing market dominates the demographic story for the broader 747 footprint. Typical home values run several times the US median, household income sits above the national reading, and the city's population places it among the largest in the country. Median age skews a touch younger than the US figure, and the metropolitan area as a whole is many times the population of the city itself.