A fast-growing West Valley city stretching from the Phoenix suburbs up toward Lake Pleasant, Peoria is a spring-training hub and outdoor-recreation gateway. It sits within Greater Phoenix’s West Valley 623 code. This guide breaks down Peoria’s area codes, the required 10-digit dialing, the no-daylight-saving time quirk, major ZIP codes, and local scam warnings. (Note: this covers Peoria, Arizona, not Peoria, Illinois.)
Peoria Area Codes at a Glance
| Detail | Information |
|---|---|
| Primary Area Code(s) | 623 |
| Overlay / Adjacent Code(s) | 602 (metro) |
| Time Zone | Mountain Standard Time (MST) – no daylight saving time |
| Major County | Maricopa County |
| Dialing Format | 10-digit dialing required |
Area Code Breakdown & Valley Mapping
623 – West Valley Code
Area code 623 is the West Valley code, covering Peoria, Glendale, Surprise, and Avondale. Split from 602 in 1999, it is Peoria’s primary code across the northwestern Phoenix metro.
602 – Central Phoenix Code
Area code 602 is the central Phoenix code, and because calls across the Valley are local, 602 numbers appear throughout Greater Phoenix alongside Peoria’s West Valley 623.
Neighborhoods & Local Coverage
Peoria’s 623 code covers a city that runs from established southern neighborhoods up into the desert foothills. Old Town Peoria anchors the historic core, while the Peoria Sports Complex — spring-training home of the San Diego Padres and Seattle Mariners — and the surrounding P83 entertainment district form a lively dining and nightlife hub.
To the north, the same codes reach the master-planned Vistancia community and the recreation areas around Lake Pleasant Regional Park. As part of the West Valley, Peoria shares the 623 code with neighboring Glendale and Surprise under the same dialing plan.
Local Dialing Rules, Time Zone & International Format
Because Greater Phoenix is served by three interleaving area codes, Peoria and the West Valley require 10-digit dialing for local calls — always dial the area code plus the 7-digit number. The West Valley uses 623, while central Phoenix uses 602 and the East Valley uses 480.
A note on Arizona time: Arizona does not observe daylight saving time, so it stays on Mountain Standard Time (MST) all year. In the summer, that means Peoria shares the same clock as Pacific Time cities like Los Angeles, while in winter it matches Denver on Mountain Time. Keep this in mind when scheduling calls across state lines.
To call Peoria from outside the United States, dial your country’s exit code, then the U.S. country code +1, followed by the 10-digit number (for example, +1 623 XXX-XXXX). From inside the U.S. and Canada, simply dial 1 before the 10-digit number for long-distance calls.
Major ZIP Codes Covered
The 623 service area spans many of Peoria’s core ZIP codes, including 85345, 85381, 85382, and 85383.
Spam & Scam Call Warnings in Peoria
Peoria residents report neighbor-spoofing robocalls faking a local 623 prefix, plus fake utility-shutoff threats from callers posing as APS. Auto-warranty and Medicare scams are also common across the West Valley.
| Scam Type | What to Watch For |
|---|---|
| Neighbor Spoofing | Calls that mimic a local 623 prefix to look familiar. |
| Utility / Toll Scams | Threats to shut off power or demand toll payment via gift cards. |
| IRS / Government | Robocalls claiming legal action — agencies never call to demand instant payment. |
Red flag: Any caller who pressures you to pay immediately with gift cards, wire transfers, or cryptocurrency is almost certainly running a scam. Hang up and verify through an official number.
↑ See the complete list of All US Area Codes by State for every code across the country.
Nearby & Related Arizona Cities
Frequently Asked Questions
What area code is Peoria, AZ?
Peoria, Arizona uses the West Valley code 623, with central Phoenix’s 602 also appearing across the metro.
Is Peoria, AZ the same as Peoria, IL?
No. Peoria, Arizona (area code 623) is a West Valley suburb of Phoenix. Peoria, Illinois uses area code 309. They are different cities in different states.
Does Peoria have the same area code as Glendale?
Yes. Peoria, Glendale, and Surprise all use the 623 West Valley code.
Do I need to dial 10 digits in Peoria, AZ?
Yes. Because Greater Phoenix spans three area codes, all local calls require 10-digit dialing.
Stay Safe & Explore More
- Verify an unknown caller in our Scam Alerts directory.
- Comparing nationwide numbers? See our Toll-Free Numbers guides.