Area code 970 is a telephone area code in the North American Numbering Plan. It covers the western and northern parts of Colorado, including cities like Fort Collins, Grand Junction, and Durango. Area code 970 was created on April 2, 1995 as a split from 303, making it the fourth interchangeable area code after 334, 360, and 520.[1] This area is set to be overlaid by 748 on July 7, 2025.[2]
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