Area Code 983
Area code 983 is in Colorado, USA , spanning 14 counties and serving 74 cities, including Denver, Westminster or Boulder; it currently uses 24 prefixes, assigned from 983-200-XXXX through 983-999-XXXX.
In service since June 17, 2022, area code 983 is an overlay Numbering Plan Area, part of overlay complex 303/720/983.
The current local time is .
For exact NPA boundaries see official 983 area code map
Phone number lookup
More Colorado area codes:
Locate any 983-NXX prefix:
| NPANXX | Area Served1 | Date2 |
|---|---|---|
| 983-200 | Longmont | 04/07/2023 |
| 983-201 | Denver | 09/06/2023 |
| 983-202 | Denver | 01/23/2024 |
| 983-203 | Denver | 02/15/2024 |
| 983-204 | Denver | 08/22/2024 |
| 983-205 | Strasburg | 09/05/2024 |
| 983-206 | Fort Lupton | 09/05/2024 |
| 983-207 | Longmont | 09/11/2024 |
| 983-208 | Denver | 09/11/2024 |
| 983-209 | Fort Lupton | 09/12/2024 |
| 983-210 | Denver | 09/20/2024 |
| 983-212 | Denver | 09/27/2024 |
| 983-213 | Longmont | 11/15/2024 |
| 983-214 | Denver | 01/27/2025 |
| 983-215 | Denver | 02/20/2025 |
| 983-216 | Denver | 03/14/2025 |
| 983-217 | Denver | 03/28/2025 |
| 983-222 | Roggen | 05/09/2023 |
| 983-333 | Denver | 12/15/2023 |
| 983-444 | Denver | 01/31/2024 |
| 983-777 | Denver | 10/03/2023 |
| 983-888 | Denver | 06/02/2023 |
| 983-983 | Longmont | 03/29/2023 |
| 983-999 | Denver | 08/08/2023 |
- For 'Area served' we list the rate center. In the North American Numbering Plan a rate center is a geographic area used to determine local calling boundaries for billing purposes. Its name is generally a locality, often not the only one served by an NPA-NXX combination.
- Assignment date.
- NXX prefixes last updated: June 3, 2025
Cities in area code 983
| City1 | County | Time Zone2 |
|---|---|---|
| Allenspark | Boulder | M |
| Arvada | Jefferson | M |
| Aurora | Adams | M |
| Bailey | Park | M |
| Bennett | Adams | M |
| Black Hawk | Gilpin | M |
| Bond | Eagle | M |
| Boulder | Boulder | M |
| Brighton | Adams | M |
| Broomfield | Broomfield | M |
| Buffalo Creek | Jefferson | M |
| Byers | Arapahoe | M |
| Castle Rock | Douglas | M |
| Central City | Gilpin | M |
| Commerce City | Adams | M |
| Conifer | Jefferson | M |
| Dacono | Weld | M |
| Deer Trail | Arapahoe | M |
| Denver | Adams | M |
| Dumont | Clear Creek | M |
| Dupont | Adams | M |
| Eastlake | Adams | M |
| Elbert | El Paso | M |
| Eldorado Springs | Boulder | M |
| Elizabeth | Elbert | M |
| Empire | Clear Creek | M |
| Englewood | Arapahoe | M |
| Erie | Weld | M |
| Evergreen | Jefferson | M |
| Firestone | Weld | M |
| Fort Lupton | Weld | M |
| Franktown | Douglas | M |
| Frederick | Weld | M |
| Georgetown | Clear Creek | M |
| Golden | Jefferson | M |
| Grant | Park | M |
| Henderson | Adams | M |
| Hereford | Weld | M |
| Highlands Ranch | Douglas | M |
| Hudson | Weld | M |
| Hygiene | Boulder | M |
| Idaho Springs | Clear Creek | M |
| Idledale | Jefferson | M |
| Indian Hills | Jefferson | M |
| Jamestown | Boulder | M |
| Keenesburg | Weld | M |
| Kiowa | Elbert | M |
| Kittredge | Jefferson | M |
| Lafayette | Boulder | M |
| Lakewood | Jefferson | M |
| Larkspur | Douglas | M |
| Littleton | Arapahoe | M |
| Longmont | Boulder | M |
| Louisville | Boulder | M |
| Louviers | Douglas | M |
| Lyons | Boulder | M |
| Morrison | Jefferson | M |
| Nederland | Boulder | M |
| Niwot | Boulder | M |
| Parker | Douglas | M |
| Pine | Jefferson | M |
| Pinecliffe | Boulder | M |
| Roggen | Weld | M |
| Rollinsville | Gilpin | M |
| Sedalia | Douglas | M |
| Sedgwick | Sedgwick | M |
| Shawnee | Park | M |
| Silver Plume | Clear Creek | M |
| Strasburg | Adams | M |
| Thornton | Adams | M |
| Ward | Boulder | M |
| Watkins | Adams | M |
| Westminster | Adams | M |
| Wheat Ridge | Jefferson | M |
- Listed above are most places served by USA area code 983. When multiple places in a US state share the same name we list the largest one only. Cities with population over 50,000 are displayed in bold text.
- M stands for Mountain Time (currently ).