The area code 719 is located in Alamosa, Colorado.
Area code 719 serves south-central and southeastern Colorado, including Alamosa in the wide-open San Luis Valley. Established in 1988 after a split from 303, it became Colorado’s second area code and now spans communities from the Arkansas River Valley to the Pikes Peak region. Alamosa sits near the Rio Grande and acts as a gateway to Great Sand Dunes National Park and other high-desert landmarks. This area code connects rural towns, college campuses, and military sites across the Mountain Time Zone.
Major cities and landmarks covered by area code 719 include:
“Great Sand Dunes National Park features the tallest dunes in North America, rising up to 750 feet.” (National Park Service)
If you see a phone number with a 719 area code, it likely comes from the Pikes Peak region, the Arkansas Valley, or the San Luis Valley around Alamosa. The area uses standard 10-digit dialing and currently has no overlay, so 719 is the only code in this region. It includes both landlines and mobile phone numbers, and number portability lets many users keep their 719 numbers when they move within the area. For quick reference, 719 ties together iconic Colorado places—Pikes Peak, the Royal Gorge, and the Great Sand Dunes—with everyday life in Alamosa and beyond.