Greeley, CO is currently served by one area code which is area code 970. Area Code 970 was created from a split of area code 303 in 1995.
In addition to Greeley, CO area code 970 serves the northern and western portions of Colorado including the larger cities and communities of Fort Collins, Grand Junction, Greeley and Loveland in addition to many smaller communities within the service area.
Greeley, CO is located in Weld County and observes the Mountain Time Zone. View our Times by Area Code tool.