Longmont, Colorado
Area codes 303, 720, 983 · Population: 86,270
Mountain (MT)
Colorado
Pop. 86,270
Area Codes Serving Longmont
About Longmont, Colorado
Longmont is a city in Colorado that is served by area codes 303, 720, 983. The city has a population of approximately 86,270 residents and is located in the Mountain Time Zone.