Area code 983 covers Denver and surrounding areas in Colorado. It was activated in 2022 as an overlay of area code 303. Today it shares its territory with overlay code 720. For the full picture, see all Colorado area codes.
| State | Colorado |
|---|---|
| Primary city | Denver |
| Cities also served | Denver, Aurora, Lakewood, Boulder, Thornton, Westminster, Littleton, Centennial |
| Time zone | Mountain (UTC-7 / UTC-6 DST) |
| Year established | June 17, 2022 |
| Original 1947 NPA? | No |
| Parent code | 303 |
| Overlay codes | 303, 720 |
| Currently in use? | Yes, actively assigned |
| Ten-digit dialing required? | Yes |
Cities Served by Area Code 983
Area code 983 serves Denver metropolitan area and surrounding Front Range communities, including Denver, Arapahoe, Jefferson, Adams, Boulder, Douglas, and Broomfield counties, including the following cities and communities:
- Denver
- Aurora
- Lakewood
- Boulder
- Thornton
- Westminster
- Littleton
- Centennial
Nearby area codes covering the same broader region include: 303, 720, 719, 970, 748.
How to Get a 983 Phone Number
There are three ways to get a phone number with the 983 area code, each suited to a different need:
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Browse 983 Numbers →- Buy from a premium-number specialist. Companies that hold curated inventories of specific area codes can sell you a 983 number directly, often with a one-time fee and ownership transferred to you (no recurring carrier fees). This is the option for picking a specific memorable number, or for getting an area code that most carriers won’t let you request. Browse our 983 inventory.
- Sign up with a VoIP carrier. Voice-over-IP services (such as Google Voice, OpenPhone, Grasshopper, and many others) can typically provision a 983 number on request, especially for active overlay codes. You won’t usually get to pick the specific number, but you’ll get a working line in the area code. This is the cheapest option for anyone who doesn’t need a particular number.
- Port an existing 983 number. If you already have a 983 phone number with another carrier, you can transfer it (port it) to a new service provider while keeping the number. This works for landlines, cell phones, and VoIP services, though landlines outside of Colorado sometimes can’t accept inbound ports of 983 numbers due to 911 routing rules.
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Frequently Asked Questions
Is the 983 area code still in use?
Yes. 983 is actively assigned to new phone lines in Denver metropolitan area and surrounding Front Range communities, including Denver, Arapahoe, Jefferson, Adams, Boulder, Douglas, and Broomfield counties.
What is the difference between 983 and 303?
Today they share the same geographic territory in Colorado. New phone lines in the area may be assigned either code. The two codes work identically for calling, billing, and service.
What is the parent area code of 983?
Area code 983 is an overlay of 303. Both codes serve the same region of Colorado.
Can I get a 983 number if I don't live in Colorado?
Yes. Phone numbers are no longer tied to a physical address. With VoIP service or a number broker, you can hold a 983 number from anywhere in the world. The number routes to whatever device or carrier you specify.
Is 983 a scam area code?
No. 983 is a legitimate, active area code for Denver metropolitan area and surrounding Front Range communities, including Denver, Arapahoe, Jefferson, Adams, Boulder, Douglas, and Broomfield counties. Like any area code, scammers occasionally spoof 983 caller IDs, but the code itself is heavily used by real Colorado businesses, government offices, and residents.
When did area code 983 go into service?
Area code 983 was activated on June 17, 2022, after the Colorado Public Utilities Commission approved it on May 21, 2021, to relieve number exhaustion in the 303/720 overlay region.
What area codes overlap with 983?
Area code 983 is part of a three-code overlay complex with 303 and 720. All three codes serve the same geographic area — the Denver metro and surrounding Front Range communities — and ten-digit dialing is required for all local calls within the region.
Does getting a 983 number mean my existing 303 or 720 number will change?
No. Existing 303 and 720 numbers are unaffected. The 983 code is assigned only to customers requesting new service or an additional line after June 17, 2022.
What cities are covered by the 983 area code?
The 983 area code covers the Denver metropolitan area, including Denver, Aurora, Boulder, Lakewood, Thornton, Westminster, Littleton, Centennial, Longmont, Broomfield, Castle Rock, and other Front Range communities.
Related Reading
- How Are Area Codes Assigned?
- Why the Right Area Code Matters
- When Did We Start Using Area Codes?
- How Many Area Codes Are In the US?
Looking for a different code? See the complete US area code directory.
