Why Choose a 720 Area Code?
Area code 720 covers the same region as 303, including Denver, Boulder, Aurora, and surrounding suburbs. Introduced as an overlay for the original 303 area code, 720 provides expanded phone number availability in one of the fastest-growing markets in the country.
From tech startups in downtown Denver to real estate professionals in Boulder, a 720 number helps you build local trust and improve answer rates across Colorado's Front Range.