The area code 720 is located in Boulder, Colorado.
The telephone area code 720 is assigned to Boulder, Colorado. Located in the heart of the Rocky Mountains, Boulder is known for its stunning natural beauty and vibrant outdoor lifestyle. With a population of over 100,000, this dynamic city offers a mix of bustling urban attractions and picturesque landscapes. Whether you're a resident or planning a visit, having the 720 area code means you're part of the lively Boulder community. Connect with friends, family, and local businesses using this distinct area code. Explore the diverse offerings of Boulder, from its thriving university scene to its world-class hiking trails. Embrace the spirit of adventure in the 720 area code of Boulder, Colorado.