All 500-Series Area Codes
Browse every active area code in the 500–599 range across the United States.
The 500-series mixes long-established codes with a heavy share of newer overlays, and the contrast shows up clearly across the group. Original 1947 assignments like 502 in Louisville, 503 in Portland, Oregon, and 504 in New Orleans anchor cities that have carried these codes for nearly eight decades, while later additions like 539 in Tulsa, 564 in Spokane, 572 in Oklahoma City, and 585 in Rochester, New York were introduced to relieve number pressure as those metros grew. Spokane in particular shows the pattern in miniature: 509 has served the city since 1957, with 564 added later as a same-territory overlay. The range covers a broad geographic mix — the West Coast (510 in Oakland, 541 in Eugene), the Mountain West (505 in Albuquerque, 575 in Las Cruces), the Midwest (513 in Cincinnati, 515 in Des Moines), the Northeast (508 in Worcester, 570 in Scranton), and the South (501 in Little Rock, 540 in Roanoke).
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