Colorado Area Code
The area code for Colorado refers to the numerical code assigned to a specific geographic region within the state of Colorado for telephone numbering purposes. Colorado has several area codes, and each one corresponds to a particular area or region within the state. Area codes are used in phone numbers to help route calls to the correct destination. Some of the area codes in Colorado include 303, 720, 719, and 970, among others, each covering different parts of the state.
| State | colorado |
| State Abbreviation: | CO |
| State Nickname: | Centennial State Equality State |
| Capital City | Denver |
| Area Codes | 303, 719, 720, 970 |
| Timezone | Mountain Time Zone (MT) |
What time zone is Colorado?
Colorado's primary time zone is Mountain Time (MT), typically UTC-7 during Standard Time and UTC-6 during Daylight Saving Time. Some western parts of the state may use Mountain Daylight Time (MDT) during DST. This variation is due to Colorado's geographic diversity and wide borders.
Note that the start and end dates of daylight saving time can change
History
Colorado's area code history includes the establishment of the original 303 area code in 1947, followed by the introduction of the 719 area code in 1988 to address the growing demand in the southern part of the state. In 1995, the 970 area code was added to serve the northern and western regions, and in 1998, the 720 area code was introduced as an overlay to the 303 area code, enabling new phone numbers to receive either code. These changes were essential to manage the state's burgeoning population and telecommunications needs efficiently.
All Area Codes in Colorado
This table provides a quick overview of all area codes, their locations, and some historical context for each.
| Area Code | Location | History and Details |
|---|---|---|
| 303 | Denver Metro Area | Covers the Denver metropolitan area and surrounding regions. |
| 720 | Overlay for 303 | An overlay code serving the same regions as 303. |
| 719 | Southern Colorado | Covers the southern part of the state, including cities like Colorado Springs and Pueblo. |
| 970 | Northern and Western Colorado | Covers the northern and western regions of Colorado, including cities like Fort Collins and Grand Junction. |
Largest Cities in Colorado with area codes
Quick overview of large cities, their area codes, and some historical context for each in colorado.
| Name | Area Code | History and Details |
|---|---|---|
| Denver | 303, 720 | The capital and largest city of Colorado, known for its cultural scene and outdoor activities. |
| Colorado Springs | 719 | Located in southern Colorado, known for its natural beauty and proximity to Pikes Peak. |
| Aurora | 303, 720 | A diverse city adjacent to Denver, known for its cultural diversity and economic development. |
| Fort Collins | 970 | Home to Colorado State University and known for its lively downtown and outdoor recreation. |
| Lakewood | 303, 720 | A western suburb of Denver with a mix of residential and commercial areas. |
| Thornton | 303, 720 | Located in the northern Denver metropolitan area, known for its family-friendly neighborhoods. |
| Arvada | 303, 720 | A historic city with a small-town feel, located northwest of Denver. |
| Westminster | 303, 720 | Part of the Denver metropolitan area, known for its parks and recreational opportunities. |
| Pueblo | 719 | Located in southern Colorado, known for its steel industry and cultural heritage. |
| Boulder | 303 | Home to the University of Colorado Boulder and known for its progressive culture and outdoor activities. |