Denver area codes in brief
| Code | Main places | Since | Overlay | Time zone | Exhaust |
|---|---|---|---|---|---|
| 303 | Allenspark-lyons, Bennett, Byers and more | 1947 | 720 and 983 | Mountain time | 2069 |
| 720 | Allenspark-lyons, Bennett, Byers and more | 1998 | 303 and 983 | Mountain time | 2069 |
| 983 | Allenspark-lyons, Bennett, Byers and more | 2022 | 303 and 720 | Mountain time | 2069 |
Source: NANPA public reports: the area code report and the rate-centre report, file dated 11/01/2026. The exhaust year comes from the NANPA projections release 2026-1 (April 2026). We are not an official NANPA site.
Area codes around Denver
The Denver-Aurora-Centennial, CO metro area also uses 719.
Get a number in Denver
A Denver number can come by one of two routes. With a provider plan, you get a new number, chosen at sign-up from the pool of numbers that provider holds in the code. For a one-time price, sellers list numbers they already hold, often with a pattern, and you move the number to a provider afterwards.
Providers ranked by first-year cost
| Provider | Cheapest plan | First year | Link |
|---|---|---|---|
 Free app | Basic (Just for me), free | $0 | Open Google Voice |
 Free app | Free plan, free | $0 | Open TextNow |
 Developer API | Pay-as-you-go local number, $1.15 a month | $13.80 | Open Twilio |
 Second-number app | Standard, $3.99 a month billed yearly | $47.99 | Open Burner |
 Toll-free specialist | Solo, $6.99 a month billed yearly | $84 | Open UniTel Voice |
 Second-number app | Deluxe (local number), $6.99 a month billed yearly | $102.88 | Open GoDaddy Conversations (formerly Smartline) |
Sellers listing local numbers
| Seller | What it sells | Listed price | Monthly fee | Link |
|---|---|---|---|---|
 Marketplace | Local numbers | From $9 one-time | None stated | Search at Exclusive Digits |
 Marketplace | Local and toll-free | From $9.95 one-time | $2.99 a month | Search at NumberBarn |
 Number broker | Local and toll-free | From $99 one-time | None stated | Search at RingBoost |
 Number broker | Local and toll-free | From $100 one-time | None stated | Search at PhoneNumberExpert |
| 212areacode.comNumber broker | Local numbers | From $150 one-time | None stated | Search at 212areacode.com |
Some sellers and providers may pay us a referral fee. The order stays the same, and first-year cost is what decides it. How we earn
Denver area code questions
Which area code serves Denver?
In Denver, the codes in use are 303, 720 and 983. Since they overlay one another, a new number can come from any one of them.
Which Denver area code is the original?
303 has been in use since 1947.
When calling locally in Denver, do I dial the area code?
Yes, you use 10-digit dialling.