- Location
- Denver, Colorado
- Service began in
- 1998
- Local time zone
- Mountain time zone
- Calls within the area
- Full 10-digit dialling
- The rate centres
- 13
- Expected exhaust
- 2069
- Country calling code
- +1 (United States)
Sources: NANPA public reports, the NANPA area code report and the rate centre report, file dated 11/01/2026. The exhaust year is taken from NANPA projections 2026-1 (April 2026). The official NANPA site is not this one.
Getting a number in area code 720
There are two ways to get a 720 number. A provider includes a new number with its plan. You choose it when you sign up from the numbers the provider holds in the code. A seller posts numbers it has, often with a pattern, at a one-time price. After that, you transfer your chosen number to a provider.
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 offering listed 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. First-year cost determines the order, and referral fees do not change it. How we earn
Places in the 720 area code
For 720, NANPA lists 13 rate centres. Numbers are assigned to each one, a local calling area:
Strasburg, Roggen, Longmont, Keenesburg, Hudson, Georgetown, Fort Lupton, Denver, Deer Trail, Deckers, Byers, Bennett, Allenspark-lyons.
Other related area codes
One area and one numbers pool: 303 and 983. Any of these codes may provide a new number in this area, so request the one you want.
Colorado also uses 719, 970 and 748.
City guides: Denver area codes.
720 area code questions
Where is area code 720 located?
720 rings in Denver, Colorado, in the Denver-Aurora-Centennial, CO area.
What country code does a 720 number use?
+1. 720 sits in the North American Numbering Plan. Calling from abroad, you dial +1 720 plus the 7-digit number.
What time is it in the 720 area code?
Area code 720 uses Mountain time.
Who calls using a 720 number?
Anyone may use a number in this code, including homes, mobiles, local businesses and callers who fake a local number. When a 720 number appears on your screen, it shows where the number was assigned, not the caller's identity.