623 Area Code
| State: | Arizona |
| Top City: | Phoenix |
| Timezone: | MST (UTC-7) |
| Current Time: |
Where is Area Code 623 located?
The 623 area code belongs to the state of Arizona, United States. More specifically, it covers parts of Maricopa County, including the cities of Glendale, Peoria, and the western suburbs of Phoenix.
So, if you’re getting a call from 623, it’s probably someone from the sunny state of Arizona!
623 Area Code Time Zone
The 623 area code is located in the Mountain Standard Time zone (MST).
History of 623 Area Code
It was created on March 1, 1999, when the original area code 602 was split into three parts: 602, 480, and 623. The 623 area code covers the West Valley, including cities such as Glendale, Surprise, Buckeye, and Avondale. In 2023, the 623 area code was recombined with the other two area codes into an overlay complex that covers the entire Phoenix area. This change required ten-digit dialing for all local calls in the region.
Top 10 Counties in Area Code 623
| County | Population |
| Maricopa | 4,485,414 |
| Pima | 1,047,279 |
| Pinal | 462,789 |
| Yavapai | 235,099 |
| Mohave | 212,181 |
| Yuma | 213,787 |
| Cochise | 125,922 |
| Coconino | 143,476 |
| Navajo | 110,924 |
| Apache | 71,818 |
Top 10 Cities in Area Code 623
| City | Population |
| Phoenix | 1,761,243 |
| Glendale | 254,535 |
| Peoria | 175,961 |
| Surprise | 141,664 |
| Avondale | 87,931 |
| Goodyear | 85,147 |
| Buckeye | 79,620 |
| Sun City | 39,363 |
| El Mirage | 35,670 |
| Sun City West | 24,535 |
Top Telephone Carriers
| Landline | Wireless |
| AT&T | Verizon Wireless |
| Verizon | AT&T |
| CenturyLink | T-Mobile |
| Cox Communications | Sprint |
| Frontier Communications |