Cities in area code 983
Area code 983 serves 6 localities in Colorado, led by Denver, Longmont, Fort Lupton. The table lists every rate center — the billing locality each prefix is anchored to — with its share of the code's 38 active prefixes.
Denver, Longmont, Fort Lupton, Strasburg, Deckers and Roggen hold the largest prefix inventories. Each locality below links to its rate-center page with the full prefix list.
Metropolitan coverage: 3 rate centers belong to FCC top-100 metro areas.
Overlap note: 6 localities are shared with other area codes, so a neighbor's number may differ in its first three digits.
Clock-wise the coverage is Mountain.
A caller's real location can differ: numbers port between carriers and follow their owners when they move. Use the prefix tables to see where a specific number block was issued.
| Locality (rate center) | Active prefixes | Metro area | All codes serving it |
|---|---|---|---|
| Denver | 25 | Denver-Aurora-Centennial, CO | 303, 720, 983 |
| Longmont | 6 | — | 303, 720, 983 |
| Fort Lupton | 3 | — | 303, 720, 983 |
| Strasburg | 2 | Denver-Aurora-Centennial, CO | 303, 720, 983 |
| Deckers | 1 | Denver-Aurora-Centennial, CO | 303, 720, 983 |
| Roggen | 1 | — | 303, 983 |
FAQ
What is the biggest city in area code 983?
Denver holds the most active prefixes (25), making it the code's largest numbering locality.
How many places does 983 cover?
6 rate centers in Colorado hold active 983 prefixes, from Denver down to communities with a single prefix.
Does a 983 number guarantee the caller lives in one of these places?
No — the tables show where number blocks were issued. Porting and VoIP let people keep or acquire numbers anywhere.