Area Code 256 — Huntsville, Alabama

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About Area Code 256

Region Code
256
City
Huntsville
State
Alabama
Population
1,590,000
Largest City
Huntsville
Neighboring Codes
  • 205 (Birmingham, Alabama)
  • 334 (Montgomery, Alabama)
  • 931 (Clarksville, Tennessee)
  • 423 (Chattanooga, Tennessee)
  • 706/762 (Augusta, Georgia)
  • 770 (Atlanta, Georgia)
  • 662 (Tupelo, Mississippi)
Time Zone
Central Time

Map of Area Code 256

Available Phone Numbers

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View Full List of Numbers in 256 Area Code

History & Cultural Notes

Created in the late 1990s as a split from 205, 256 consolidated the Tennessee Valley and Appalachian foothills of North Alabama around Huntsville. Rapid growth in wireless subscriptions and new enterprises quickly consumed central-office prefixes. Regulators introduced number pooling and later approved the 938 overlay in the early 2010s. The overlay required permanent ten‑digit dialing but preserved existing numbers, a practical approach for federal installations and legacy industrial lines across cities such as Decatur, Florence, and Gadsden.

Telecom development mirrors the region’s engineering profile. Redstone Arsenal and NASA’s Marshall center anchor secure voice and data circuits, while Cummings Research Park and municipal utility–backed fiber projects broaden high‑capacity access. Post‑1996 competitive carriers and VoIP offerings diversified local calling options, and rural exchanges increasingly rely on wireless substitution. The result is a mixed network—CLEC, ILEC, and cable—supporting dense research campuses and small mountain towns alike.

  • Aerospace, defense, and spaceflight research and logistics
  • Federal agencies and contractor ecosystems at Redstone and NASA
  • Advanced manufacturing, automotive, and supplier networks
  • Universities, research parks, and entrepreneurial tech firms