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720 Area Code 🌍☎️

Area Code Profile · Colorado

The 720 area code is located in the state of Colorado and covers 137 cities, serving a total population of approximately 2,654,413. Major cities covered by the 720 area code include Denver, Aurora, Lakewood, Thornton, Arvada (which represents the most populated areas). There are a total of 784 telephone prefix exchanges in this area code, which support an estimated 7,840,000 active or assignable phone numbers. These prefix lines are operated by 52 distinct carriers, with Denver as the primary rate center location.

Mountain Time137 Cities784 Prefixes

Reverse Phone Lookup in Denver, Colorado

Unmask unknown callers, verify telemarketing reports, and view detailed owner information for any phone number beginning with area code (720).

How it works

1

Enter Number

Provide any 10-digit phone number starting with the (720) area code.

2

Database Search

Our system scans public registries, carrier mappings, and spam reports.

3

Reveal Report

Access location details, line type, carrier, owner information, and safety levels.

Neighborhood Demographics

Calculated demographics and census summary estimations for area code 720.

45.2 y/oMedian Age
$64,200Median Income
$607,000Median Home Value
2,654,413Total Population

Telemarketer Complaints

Most recent complaints and comments for phone numbers beginning with 720.

Did you receive an unwanted call from a (720) phone number?

Help the community identify spammers by filing a comment.

(720) 553-1459May 17, 2026Scam / Fraud
Robocall claiming to be from the IRS. Stated that my Social Security Number has been flagged and suspended. Asked to press 1 to speak with an agent. Obvious phishing scam.
See Details
(720) 566-1476May 16, 2026Robocall
Received a silent call. When I answered, there was just dead air for 5 seconds before it automatically disconnected. Likely an automated system testing for active numbers.
See Details
(720) 579-1493May 20, 2026Telemarketer
Offered an unsolicited quote for local roofing and home energy services. They knew my area code but when I asked how they got my number, they hung up immediately.
See Details

Cities in the 720 Area Code

The most populous cities in area code 720 are: Denver (600,158), Aurora (325,078), Lakewood (142,980), Thornton (118,772), and Arvada (106,433).

Other cities in the 720 area code include:

Westminster, Centennial, Boulder, Highlands Ranch, Longmont, Broomfield, Castle Rock, Commerce City, Parker, Littleton, Northglenn, Brighton, Ken Caryl, Dakota Ridge, Englewood, Wheat Ridge, Lafayette, Columbine, Golden, Louisville, Sherrelwood, Erie, Welby, Greenwood Village, Superior.

CityPopulation% in Area Code
Denver600,158100%
Aurora325,078100%
Lakewood142,980100%
Thornton118,772100%
Arvada106,433100%
Westminster106,114100%
Centennial100,377100%
Boulder97,385100%
Highlands Ranch96,713100%
Longmont86,270100%
Broomfield55,889100%
Castle Rock48,231100%
Commerce City45,913100%
Parker45,297100%
Littleton41,737100%
Northglenn35,789100%
Brighton33,352100%
Ken Caryl32,438100%
Dakota Ridge32,005100%
Englewood30,255100%

Showing top 20 of 137 cities.

What Time Zone is Area Code 720?

Mountain Time Zone

Abbreviation: MT · UTC Offset: UTC-7

The 720 area code lies within the Mountain Time Zone (MT, UTC-7).

Nearby Area Codes

303Denver, Colorado719Colorado Springs, Colorado970Fort Collins, Colorado983Denver, Colorado

Phone Prefixes in the 720 Area Code

784 prefixes found · 52 carriers · 12 rate centers

PrefixCarrierRate Center
(720) 200QWEST CORPORATIONDENVER
(720) 201NEW CINGULAR WIRELESS PCS, LLCDENVER
(720) 202CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CODENVER
(720) 203T-MOBILE USA, INC.DENVER
(720) 204LEVEL 3 COMMUNICATIONS, LLC - COLONGMONT
(720) 205T-MOBILE USA, INC.DENVER
(720) 206MCIMETRO ACCESS TRANSMISSION SERVICES LLCDENVER
(720) 207MCIMETRO ACCESS TRANSMISSION SERVICES LLCDENVER
(720) 208MCIMETRO ACCESS TRANSMISSION SERVICES LLCDENVER
(720) 209T-MOBILE USA, INC.DENVER
(720) 210MCIMETRO ACCESS TRANSMISSION SERVICES LLCDENVER
(720) 212MCIMETRO ACCESS TRANSMISSION SERVICES LLCDENVER
(720) 213PAETEC ITEL, LLCDENVER
(720) 214PAETEC ITEL, LLCDENVER
(720) 215CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CODENVER
(720) 216TELEPORT COMMUNICATIONS AMERICA, LLC - CODENVER
(720) 217T-MOBILE USA, INC.DENVER
(720) 218T-MOBILE USA, INC.DENVER
(720) 219CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CODENVER
(720) 220T-MOBILE USA, INC.DENVER
(720) 221MCIMETRO ACCESS TRANSMISSION SERVICES LLCDENVER
(720) 222MCIMETRO ACCESS TRANSMISSION SERVICES LLCDENVER
(720) 223MCIMETRO ACCESS TRANSMISSION SERVICES LLCDENVER
(720) 224MCIMETRO ACCESS TRANSMISSION SERVICES LLCDENVER
(720) 225MCIMETRO ACCESS TRANSMISSION SERVICES LLCDENVER
(720) 226MCIMETRO ACCESS TRANSMISSION SERVICES LLCDENVER
(720) 227MCIMETRO ACCESS TRANSMISSION SERVICES LLCDENVER
(720) 228MCIMETRO ACCESS TRANSMISSION SERVICES LLCDENVER
(720) 229MCIMETRO ACCESS TRANSMISSION SERVICES LLCDENVER
(720) 230XO COLORADO, LLCDENVER
(720) 231T-MOBILE USA, INC.DENVER
(720) 232T-MOBILE USA, INC.DENVER
(720) 233T-MOBILE USA, INC.DENVER
(720) 234T-MOBILE USA, INC.DENVER
(720) 235T-MOBILE USA, INC.DENVER
(720) 236T-MOBILE USA, INC.DENVER
(720) 237NEW CINGULAR WIRELESS PCS, LLCDENVER
(720) 238T-MOBILE USA, INC.DENVER
(720) 239AT&T - LOCALDENVER
(720) 240MCIMETRO ACCESS TRANSMISSION SERVICES LLCDENVER
(720) 241MCIMETRO ACCESS TRANSMISSION SERVICES LLCDENVER
(720) 242QWEST CORPORATIONDENVER
(720) 243NEW CINGULAR WIRELESS PCS, LLCDENVER
(720) 244NEW CINGULAR WIRELESS PCS, LLCDENVER
(720) 245ELECTRIC LIGHTWAVE LLC DBA ALLSTREAMDENVER
(720) 246MCIMETRO ACCESS TRANSMISSION SERVICES LLCDENVER
(720) 247MCIMETRO ACCESS TRANSMISSION SERVICES LLCDENVER
(720) 248ONVOY, LLC - CODENVER
(720) 249MCIMETRO ACCESS TRANSMISSION SERVICES LLCDENVER
(720) 250MCIMETRO ACCESS TRANSMISSION SERVICES LLCDENVER
(720) 251LEVEL 3 COMMUNICATIONS, LLC - CODENVER
(720) 252T-MOBILE USA, INC.DENVER
(720) 253T-MOBILE USA, INC.DENVER
(720) 254T-MOBILE USA, INC.DENVER
(720) 255T-MOBILE USA, INC.DENVER
(720) 256T-MOBILE USA, INC.DENVER
(720) 257MCIMETRO ACCESS TRANSMISSION SERVICES LLCDENVER
(720) 258TELEPORT COMMUNICATIONS AMERICA, LLC - CODENVER
(720) 259LEVEL 3 COMMUNICATIONS, LLC - CODENVER
(720) 260T-MOBILE USA, INC.DENVER
(720) 261T-MOBILE USA, INC.DENVER
(720) 262LEVEL 3 COMMUNICATIONS, LLC - CODENVER
(720) 263LEVEL 3 COMMUNICATIONS, LLC - CODENVER
(720) 264QWEST CORPORATIONDENVER
(720) 265MCIMETRO ACCESS TRANSMISSION SERVICES LLCDENVER
(720) 266LEVEL 3 COMMUNICATIONS, LLC - CODENVER
(720) 267QWEST CORPORATIONDENVER
(720) 268QWEST CORPORATIONDENVER
(720) 269TELEPORT COMMUNICATIONS AMERICA, LLC - CODENVER
(720) 270T-MOBILE USA, INC.DENVER
(720) 271T-MOBILE USA, INC.DENVER
(720) 272NEW CINGULAR WIRELESS PCS, LLCDENVER
(720) 273NEW CINGULAR WIRELESS PCS, LLCDENVER
(720) 274PAETEC ITEL, LLCDENVER
(720) 275NEW CINGULAR WIRELESS PCS, LLCDENVER
(720) 276NEW CINGULAR WIRELESS PCS, LLCDENVER
(720) 277LEVEL 3 COMMUNICATIONS, LLC - CODENVER
(720) 278LEVEL 3 TELECOM OF COLORADO, LLC - CODENVER
(720) 279LEVEL 3 TELECOM OF COLORADO, LLC - CODENVER
(720) 280T-MOBILE USA, INC.DENVER
(720) 281CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CODENVER
(720) 282LEVEL 3 TELECOM OF COLORADO, LLC - CODENVER
(720) 283QWEST CORPORATIONDENVER
(720) 284MCIMETRO ACCESS TRANSMISSION SERVICES LLCDENVER
(720) 285XO COLORADO, LLCDENVER
(720) 286TELEPORT COMMUNICATIONS AMERICA, LLC - CODENVER
(720) 287COMCAST IP PHONE, LLCDENVER
(720) 288BANDWIDTH.COM CLEC, LLC - CODENVER
(720) 289NEW CINGULAR WIRELESS PCS, LLCDENVER
(720) 290T-MOBILE USA, INC.DENVER
(720) 291T-MOBILE USA, INC.DENVER
(720) 292NEW CINGULAR WIRELESS PCS, LLCDENVER
(720) 293MCIMETRO ACCESS TRANSMISSION SERVICES LLCDENVER
(720) 294MCIMETRO ACCESS TRANSMISSION SERVICES LLCDENVER
(720) 295BANDWIDTH.COM CLEC, LLC - CODENVER
(720) 296NEW CINGULAR WIRELESS PCS, LLCDENVER
(720) 297NEW CINGULAR WIRELESS PCS, LLCDENVER
(720) 298NEW CINGULAR WIRELESS PCS, LLCDENVER
(720) 299T-MOBILE USA, INC.DENVER
(720) 300T-MOBILE USA, INC.DENVER

Showing first 100 of 784 prefixes.

Frequently Asked Questions

Where is area code 720?
Area code 720 is located in Colorado, covering cities including Denver, Aurora, Lakewood.
What time zone is area code 720?
Area code 720 is in the Mountain Time Zone (MT, UTC-7).
What state is area code 720?
Area code 720 is in Colorado.