Overview of Area Code 623
Area code 623 serves the western region of the Phoenix metropolitan area in Arizona, including cities like Glendale, Peoria, Avondale, and Goodyear. It was introduced in 1999 as a split from the 602 area code to support the area’s growing population and phone number demand. 623 operates in the Mountain Standard Time Zone (MST), and 10-digit dialing is required for local calls.
Cities and Counties Covered
The 623 area code serves the western part of Maricopa County in central Arizona. Major cities and regions served by 623 include:
Cities
Glendale, Peoria, Avondale, Goodyear, Surprise, El Mirage, and Sun City
Counties
Maricopa County, and Pinal County
Why Businesses Use a 623 Number
A 623 number provides several benefits for businesses operating in the West Valley region of Greater Phoenix:
Builds Trust and Credibility
Customers are more likely to trust and respond to businesses using a recognizable Glendale-based 623 area code.
Local Marketing and Presence
A 623 number enhances your business’s visibility in local searches, improves your advertising impact, and connects you with potential customers across the West Valley.
Increased Response Rates
Residents in Glendale, Peoria, and nearby areas are more likely to answer calls from 623 numbers, resulting in better engagement and higher response rates.
Text-Enable or Port Your 623 Number
Already using a 623 number? Falkon SMS can help you text-enable your existing landline or VoIP number. We also provide number porting services, so you can keep your current phone number while gaining SMS functionality.
Enhance Your Business Operations with Falkon SMS Features
Falkon SMS offers powerful communication tools for businesses using a 623 number:
Group Texting
Reach large audiences with a single text to announce promotions or send updates.
Auto Replies
Stay responsive even after hours with automated responses.
Message Scheduling
Schedule texts in advance to ensure timely delivery, no matter where you are.
Time Zone Details
Standard Time:
Mountain Standard Time (MST) – UTC−7
Daylight Saving
Does not observe Daylight Saving Time (DST)
DST in 2026
Begins on March 8, 2026, and ends on November 1, 2026
History of the 623 Area Code
Area code 623 was introduced in 1999 following a split from 602, which originally served the entire Phoenix metro area. As the population expanded westward into cities like Glendale and Peoria, 623 was established to accommodate the growing demand for new phone numbers. Today, it remains an essential part of the communication infrastructure in the West Valley of Arizona.
Dialing Guidelines
Local Calls
Dial the full 10-digit number (623-XXX-XXXX)
Long-Distance Calls
Dial 1 + 623 + 7-digit number
International
Dial +1 (623) XXX-XXXX from outside the U.S.
Economic and Cultural Importance
The 623 area code encompasses the West Valley region of Phoenix, an area of rapid development and economic significance:
Tourism & Recreation
The West Valley features spring training facilities like Camelback Ranch and State Farm Stadium — home of the Arizona Cardinals — drawing sports fans and tourists year-round.
Finance & Business Services
Glendale and Peoria are home to major retail centers, logistics operations, and a growing number of professional service firms.
Healthcare & Education
The area includes Banner Health facilities and branches of Arizona State University and Midwestern University, contributing to both medical services and academic development.
Innovation & Technology
West Valley cities are investing in smart infrastructure and attracting data centers, tech startups, and advanced manufacturing industries.
Scam Warning
Stay alert to scam calls or texts from numbers using the 623 area code. Scammers may spoof local numbers to appear credible. Always verify the caller before sharing sensitive information.
Major Carriers
The 623 area code is supported by leading telecommunications providers, including:
If you have a phone number with a 623 area code and want to enable text messaging capabilities, Falkon SMS can help. Whether it’s a landline, VoIP number, or business line, we offer reliable solutions to text-enable your existing number.
