Buy a Local Phone Number – Area Code 983 (Denver, Colorado)

Following decades of growth along Colorado’s Front Range, area code 983 was introduced in the early 2020s as an all-services overlay on the long-standing 303/720 footprint centered on Denver and the northern urban corridor. The region originally carried 303 when the nationwide numbering plan launched in 1947; as population spread beyond the metro, 970 was split off in 1995 for most of the state outside the core. A subsequent overlay, 720 (1998), normalized 10-digit dialing in metro Denver. The addition of the new code expanded numbering supply without altering rate centers or community identities, reflecting continued in‑migration and business formation.

Numbering changes track Denver’s evolution from a railroad-and-energy crossroads into a diversified metro economy. Redevelopment around Union Station, growth along the I-25 tech corridor, and expansion of suburban campuses tied to aerospace, clean energy, and health services drew migrants from across the Mountain West and beyond. Cultural life blends Western and Latino traditions with a strong outdoor ethic and support for major-league sports, while neighborhoods range from early streetcar suburbs to new transit-oriented districts.