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  5. Area Code 623

Where Is Area Code 623?

Area code 623 is found in the US state of Arizona. Primarily servicing the city of Glendale (population: 289569), area code 623 covers 1 county of Arizona.

Located in the Mountain time zone, area code 623 is on the same time as Phoenix, AZ.

Area code 623 was brought into effect on March 1, 1999. 623 was split from the parent 602 area code.

Map of Arizona with area code 623 highlighted

Counties in Area Code 623

  • Maricopa.

Most Populous Cities in Area Code 623

City County City Population Time Zone
Glendale Maricopa 289,569 MST
Peoria Maricopa 163,271 MST
Surprise Maricopa 123,868 MST
Avondale Maricopa 77,267 MST
Goodyear Maricopa 69,232 MST
Buckeye Maricopa 65,959 MST
Sun City Maricopa 46,623 MST
El Mirage Maricopa 32,828 MST
Tolleson Maricopa 32,026 MST
Sun City West Maricopa 28,610 MST
Litchfield Park Maricopa 27,122 MST
Waddell Maricopa 9,031 MST
New River Maricopa 7,960 MST
Wittmann Maricopa 6,919 MST
Tonopah Maricopa 6,862 MST
Cashion Maricopa 6,548 MST
Youngtown Maricopa 6,357 MST
Morristown Maricopa 1,628 MST
Luke AFB Maricopa 1,533 MST

Note: The above list is based off of the top 25 most populous cities in the area code as per 2012 United States Census Bureau estimates.

View all United States Area Codes.

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This page was last updated on July 3, 2015.