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# Area Code 585: Rochester's Regional Code

Area code 585 serves the Rochester metropolitan area and surrounding regions in western New York State. Established in 2001 as a split from the original 716 area code, 585 was created to accommodate the growing demand for telephone numbers in the region. The area code covers Rochester, the state's third-largest city, along with communities like Batavia, Geneseo, and Canandaigua. This region has historically been significant in American innovation, serving as the birthplace of Kodak, Xerox, and other major corporations. Today, 585 remains an important economic hub in upstate New York, and its area code serves millions of residents and businesses throughout the Finger Lakes and surrounding areas.

The North American Numbering Plan (NANP) is the standardized system that designates area codes like 585 throughout North America. Managed by the North American Numbering Plan Administrator, this system organizes telephone numbers into geographic regions identified by three-digit area codes, followed by a seven-digit local number. When population growth or business expansion creates a shortage of available numbers within an existing area code, telecommunications regulators implement splits or overlays to create new codes. The 585/716 split exemplifies this processwhile 716 retained the original Buffalo area, 585 was assigned to Rochester to ensure adequate numbering resources for future growth. This systematic approach allows the NANP to efficiently manage telecommunications infrastructure across the United States, Canada, and other North American territories.