The main cities in Colorado are:
Denver, Colorado Springs, Aurora, Fort Collins and Lakewood. The state is divided into two area codes. The area code 719 serves Colorado Springs and southeastern Colorado and the Area code 970 serves northern and western Colorado. The area code 303 was the main area code for the entire state but today it is only the Denver Metropolitan Area.
The main airport in Colorado is the Denver International Airport.
The main businesses in Colorado are related to industry, real estate and government enterprises. You can contact these type of businesses near you with WhatsApp.