Scottsdale Real Estate - Phoenix Real Estate
Arizona Relocation - 623 Area Code
Area code 623 was created in a split from area code 602 on April 1, 1999, when it was deemed that the Greater Phoenix metropolitan area could no longer continue with just one area code due to the explosive growth of the Phoenix metropolitan area in the 1990s. The western suburbs and the city west of 39th Ave North of Indian School to west of 63rd Ave from I-10 south became Area code 623, along with the city from North of Union Hills and west of the 2000 E Grid.
Area Code 623:
| City | County |
| ARIZONA STATE UNIV WEST | Maricopa County |
| ARLINGTON | Maricopa County |
| AVONDALE | Maricopa County |
| AVONDALE-GOODYEAR | Maricopa County |
| BUCKEYE | Maricopa County |
| CASHION | Maricopa County |
| EL MIRAGE | Maricopa County |
| GILA BEND AF AUX FIELD | Maricopa County |
| GLENDALE | Maricopa County |
| GOODYEAR | Maricopa County |
| LITCHFIELD PARK | Maricopa County |
| LUKE AFB | Maricopa County |
| NEW RIVER | Maricopa County |
| PALO VERDE | Maricopa County |
| PEORIA | Maricopa County |
| PHOENIX | Maricopa County |
| SUN CITY | Maricopa County |
| SUN CITY WEST | Maricopa County |
| SURPRISE | Maricopa County |
| TOLLESON | Maricopa County |
| TONOPAH | Maricopa County |
| WADDELL | Maricopa County |
| YOUNGTOWN | Maricopa County |
