Geographic Regions and Area Codes

Area code 970 is located in the northern and western parts of Colorado. It encompasses a large portion of these regions, including notable cities such as Fort Collins, Greeley, Loveland, Grand Junction, Aspen, Breckenridge, Durango, Estes Park, Glenwood Springs, Silverthorne, Steamboat Springs, and Vail. This area code is set in the Mountain Time Zone (GMT -07:00). Due to the expected exhaustion of available telephone numbers by late 2025 or early 2026, an overlay with area code 748 is planned. This overlay will ensure that businesses and residents continue to have access to new phone numbers as the region grows.