Geographic Regions and Area Codes

Area code 720 covers the northern part of central Colorado, including major cities such as Denver, Aurora, Boulder, Lakewood, Thornton, Arvada, and Westminster. This area is known for its rich culture and wildlife, with notable landmarks like Larimer Square and the Denver Art Museum. The 720 area code was introduced in 1998 as an overlay for the original 303 area code and is now overlaid by area code 983. This overlay complex allows for a large number of phone numbers to be assigned within the same geographic region.

Key regions within the 720 area code include:

  • Denver
  • Aurora
  • Boulder
  • Lakewood
  • Thornton
  • Arvada
  • Westminster

Each of these cities offers a unique blend of business opportunities and cultural experiences, making the 720 area code a vibrant place for small businesses to thrive.