626 Area Code: San Gabriel Valley Cities, ZIPs & Map

Quick answer: The 626 area code serves the San Gabriel Valley of California — east of downtown Los Angeles. It covers Pasadena, El Monte, West Covina, Alhambra, Arcadia, Monrovia, Glendora, San Gabriel, Rosemead, Baldwin Park and dozens of other cities, almost entirely inside Los Angeles County with a small sliver in San Bernardino County. It was split from area code 818 on June 14, 1997, sits in Pacific Time, and is overlaid by area code 840 (since 2021) — which is why 10-digit dialing is now required.

626 at a glance

Where is the 626 area code located?

The 626 area code covers the San Gabriel Valley — the densely populated stretch of cities and suburbs that runs east from downtown Los Angeles toward the foot of the San Gabriel Mountains. Almost the entire footprint sits inside Los Angeles County, with a small eastern sliver extending into San Bernardino County.

It's bordered by three other Southern California codes:

• 818 — the San Fernando Valley (Burbank, Glendale, Van Nuys, Encino), 626's original parent code
• 213 / 323 — central and downtown Los Angeles
• 909 — the Inland Empire (San Bernardino, Riverside, Pomona, Ontario)

626 is a split code, not an overlay — meaning a slice of an older area's territory was carved off and given its own code. The split came out of 818 on June 14, 1997, when San Gabriel Valley phone-number demand outgrew what the 818 plan could supply. Twenty-four years later, in 2021, the 840 overlay was layered on top of 626 — both codes now serve the exact same geography, and 10-digit dialing exists in the valley because of the 840 overlay, not for any other reason.

Cities covered by the 626 area code

626 covers roughly 31 cities across the San Gabriel Valley. The five largest:

Full list of cities and communities served by 626:

Western San Gabriel Valley: Alhambra · Monterey Park · Rosemead · San Gabriel · San Marino · South Pasadena · Temple City · Pasadena · Altadena · Sierra Madre

Central San Gabriel Valley: Arcadia · Monrovia · Duarte · El Monte · South El Monte · Bradbury · Irwindale · Baldwin Park

Eastern San Gabriel Valley: Covina · West Covina · Glendora · Azusa · Industry · La Puente · Hacienda Heights · Walnut · La Verne · San Dimas · Diamond Bar · Charter Oak · Rowland Heights

If your customer base sits anywhere from Pasadena and South Pasadena in the west to Glendora and Diamond Bar in the east, a 626 number reads as local to them.

ZIP codes in the 626 area code

The 626 area code overlaps with roughly 75 ZIP codes. The most common ones, grouped by city:

(Source: USPS ZIP code data and California Public Utilities Commission area-code records.)

How the 626 area code works

626 is a standard 10-digit phone number in the North American Numbering Plan (NANP). The format follows the NPA-NXX-XXXX structure:

• 626 — NPA (area code)
• NXX — three-digit central-office prefix (e.g., 793)
• XXXX — four-digit subscriber line number

Dialing rules:

Since the 840 overlay went live in 2021, mandatory 10-digit dialing applies across the San Gabriel Valley. For any local call you have to dial the area code (626 or 840) plus the seven-digit number — seven digits alone will not connect.

Example 626 prefixes (NXX)

Hundreds of central-office prefixes are assigned within 626. A sample by city (not exhaustive):

(Source: NANPA Central Office Code Utilization Survey and Telcodata records.)

History and origin of the 626 area code

626 has been the San Gabriel Valley's own code since the late 1990s. Quick timeline:

Why the split happened: through the mid-1990s the combination of mobile phones, fax lines, internet dial-up, and dense suburban growth across Los Angeles County burned through 818's pool of available numbers faster than anyone had projected.

Rather than overlay 818 immediately (which would have forced 10-digit dialing on the San Fernando Valley too), regulators carved the San Gabriel Valley off and gave it 626. The overlay came 24 years later for the same underlying reason: 626 ran low on assignable numbers, so 840 was layered on top — bringing the long-postponed 10-digit dialing rule with it.

Time zone of the 626 area code

626 sits in the Pacific Time Zone:

• Pacific Standard Time (PST): UTC−8 (early November through early March)
• Pacific Daylight Time (PDT): UTC−7 (early March through early November)

Reference clock — when it's 12:00 PM in 626 (Pasadena, CA):

If you're scheduling outbound calls to a 626 number from outside California, target between 9 AM and 5 PM Pacific Time to land in normal San Gabriel Valley business hours.

How to get a 626 phone number

A 626 number is useful if you sell into the San Gabriel Valley, run a Pasadena-area service business, or want a local-feeling presence for customers in Alhambra, Arcadia, El Monte, West Covina or Diamond Bar. You don't need to live in California — virtual-number providers can issue you a real 626 number that rings on any device.

The setup runs in four steps and takes minutes:

1. Search inventory. Pick an available 626 number from your provider's pool (or port an existing 626 number you already own).
2. Pick your plan. Choose the seat count and features that match your team.
3. Configure features. Wire up call forwarding, voicemail-to-email, business-hours routing and an auto-attendant.
4. Go live. Start taking calls within the hour. Porting an existing number runs in the background for 5–10 business days while you stay live on a temporary number.

Pricing as of mid-2026:

Most providers include call forwarding, voicemail-to-email, SMS, business-hours routing, and call recording on every plan.

See 626 virtual number options →

Three common mistakes with 626 numbers

1. Skipping the area code. Since the 840 overlay went live in 2021, 10-digit dialing is mandatory in the 626 footprint. Dialing just XXX-XXXX no longer works — for any local call you have to include the area code (626 or 840).
2. Confusing 626 with 818, 213 or 323. These are separate codes — 818 covers the San Fernando Valley, 213 / 323 cover central and downtown LA, 626 covers the San Gabriel Valley. A 626 number in Pasadena doesn't reach an 818 number in Burbank just by dialing the local part.
3. Assuming a 626 caller is physically in the San Gabriel Valley. With virtual numbers and number portability, a 626 number can ring anywhere in the world.

Is 626 a spam-heavy area code?

626 is not on any "high-risk" robocall list — it has spam-call volume roughly in line with other large Southern California codes. The FCC, FTC and California Public Utilities Commission have stepped up enforcement under the STIR/SHAKEN call-authentication framework, which most US carriers fully implemented by 2021. If you receive a suspicious 626 call:

• Don't return it — scammers often spoof local-looking 626 numbers to raise pickup rates.
• Report it to the FTC at reportfraud.ftc.gov.
• File a complaint with the FCC at consumercomplaints.fcc.gov.
• Add the number to your phone's block list (iOS: Phone → Recents → ⓘ → Block this Caller; Android: Phone → call log → menu → Block / Report).

Frequently asked questions

Get a 626 virtual number for your business

If you want to sound local to San Gabriel Valley customers — for sales calls into Pasadena and Arcadia, a clinic or service business in Alhambra or West Covina, or just to separate work calls from personal mobile — a virtual 626 number sets up in minutes. My Country Mobile offers 626 numbers with call forwarding, voicemail-to-email, SMS, IVR, and integrations with HubSpot, Zoho, Pipedrive and Zendesk. Calls route to any device worldwide, pricing starts at $12/user/month, and over 17,500 businesses already trust MCM with their virtual phone presence.

Get a 626 virtual number →

Sources

• North American Numbering Plan Administrator (NANPA)
• California Public Utilities Commission — Area Code Information
• Wikipedia — Area code 626
• USPS ZIP Code Lookup
• FCC — STIR/SHAKEN call authentication
• Federal Trade Commission — Report fraud