Area Code 712 — Sioux City, Iowa

712 Area Code – Sioux City, Iowa: Location, Time Zone & History

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About Area Code 712

Region Code
712
City
Sioux City
State
Iowa
Population
579,051
Largest City
Sioux City
Neighboring Codes
  • 515 (Des Moines, Iowa)
  • 641 (Mason City, Iowa)
  • 402 (Omaha, Nebraska)
  • 605 (Sioux Falls, South Dakota)
  • 507 (Rochester, Minnesota)
Time Zone
Central Time

Map of Area Code 712

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History & Cultural Notes

Western Iowa's 712 is a rarity in the North American Numbering Plan: assigned in 1947 as one of the three original Iowa area codes, it has never been split or overlaid, still covering exactly the territory it did nearly eighty years ago. Its neighbors, 515 and 641 to the east, and 319 across the state, have all needed adjustment over the decades, but Iowa as a whole has never resorted to an overlay, and 712 has simply never run short of numbers.

Sioux City anchors the region, historically the second-largest meatpacking center in the country after Chicago; the Sioux City Stockyards handled a peak of 3.7 million hogs in 1924. That identity persists today through Tyson Foods and Seaboard Triumph Foods, still among the area's largest employers, alongside a broader base of agribusiness and logistics along the Missouri River and I-29 corridor.

  • Sioux City, Council Bluffs, Spencer, Storm Lake, and Le Mars are among the cities served.
  • Neighboring codes include 515, 641, 402, 605, and 507.
  • Healthcare and transportation round out the local economy alongside agriculture.