Area code 831 was introduced in 1998 and serves Monterey Bay, covering cities like Salinas, Santa Cruz, Monterey. It sits in the Pacific (PT) zone and reaches a population of roughly 600K+.
With a 831 number from MeraTalk, you serve California professionally while working from any location.
A 831 line gives California a number they recognize, and recognition is the foundation of every advantage.
Outbound reps dial Monterey Bay prospects from a number those prospects recognize. A familiar 831 caller ID gets the conversation started instead of going to voicemail.
Give your Monterey Bay customers a local number to call for help. Calls route to your support team wherever they sit, with queues, schedules, and an AI receptionist after hours.
Your team doesn't need to live in California to answer a 831 number. Calls ring on laptops and mobiles anywhere, while customers see a hometown business.
Pair your 831 number with local numbers in other markets you serve. Each location keeps its own identity while every call lands in one shared MeraTalk workspace.
Area codes are added as a region's demand for phone numbers grows. Here's when each California code came online — and where 831 fits in.
213 was the first of California's current codes, assigned to Los Angeles and anchored by Los Angeles. It remains the code most residents associate with Los Angeles and Downtown LA.
As San Francisco grew, 415 was introduced to keep up with demand for new numbers around San Francisco and Marin County. Existing numbers kept their codes — 415 simply opened fresh inventory for the area.
As Central Valley grew, 209 was introduced to keep up with demand for new numbers around Stockton and Modesto. Existing numbers kept their codes — 209 simply opened fresh inventory for the area.
As Silicon Valley grew, 408 was introduced to keep up with demand for new numbers around San Jose and Santa Clara. Existing numbers kept their codes — 408 simply opened fresh inventory for the area.
As San Diego grew, 619 was introduced to keep up with demand for new numbers around San Diego and Chula Vista. Existing numbers kept their codes — 619 simply opened fresh inventory for the area.
As North Bay / Wine Country grew, 707 was introduced to keep up with demand for new numbers around Santa Rosa and Vallejo. Existing numbers kept their codes — 707 simply opened fresh inventory for the area.
As Orange County grew, 714 was introduced to keep up with demand for new numbers around Anaheim and Santa Ana. Existing numbers kept their codes — 714 simply opened fresh inventory for the area.
As Central Coast grew, 805 was introduced to keep up with demand for new numbers around Oxnard and Santa Barbara. Existing numbers kept their codes — 805 simply opened fresh inventory for the area.
As San Fernando Valley grew, 818 was introduced to keep up with demand for new numbers around Burbank and Van Nuys. Existing numbers kept their codes — 818 simply opened fresh inventory for the area.
As Sacramento grew, 916 was introduced to keep up with demand for new numbers around Sacramento and Elk Grove. Existing numbers kept their codes — 916 simply opened fresh inventory for the area.
As West Los Angeles grew, 310 was introduced to keep up with demand for new numbers around Santa Monica and Beverly Hills. Existing numbers kept their codes — 310 simply opened fresh inventory for the area.
As East Bay grew, 510 was introduced to keep up with demand for new numbers around Oakland and Berkeley. Existing numbers kept their codes — 510 simply opened fresh inventory for the area.
As Inland Empire grew, 909 was introduced to keep up with demand for new numbers around San Bernardino and Ontario. Existing numbers kept their codes — 909 simply opened fresh inventory for the area.
As Northern California grew, 530 was introduced to keep up with demand for new numbers around Redding and Chico. Existing numbers kept their codes — 530 simply opened fresh inventory for the area.
As Long Beach grew, 562 was introduced to keep up with demand for new numbers around Long Beach and Downey. Existing numbers kept their codes — 562 simply opened fresh inventory for the area.
As San Gabriel Valley grew, 626 was introduced to keep up with demand for new numbers around Pasadena and Alhambra. Existing numbers kept their codes — 626 simply opened fresh inventory for the area.
As Peninsula / Silicon Valley grew, 650 was introduced to keep up with demand for new numbers around Palo Alto and Menlo Park. Existing numbers kept their codes — 650 simply opened fresh inventory for the area.
As South Orange County grew, 949 was introduced to keep up with demand for new numbers around Irvine and Newport Beach. Existing numbers kept their codes — 949 simply opened fresh inventory for the area.
As East Los Angeles grew, 323 was introduced to keep up with demand for new numbers around Hollywood and East LA. Existing numbers kept their codes — 323 simply opened fresh inventory for the area.
As Monterey Bay grew, 831 was introduced to keep up with demand for new numbers around Salinas and Santa Cruz. Existing numbers kept their codes — 831 simply opened fresh inventory for the area.
As East Bay / Contra Costa grew, 925 was introduced to keep up with demand for new numbers around Concord and Walnut Creek. Existing numbers kept their codes — 925 simply opened fresh inventory for the area.
As Fresno Area grew, 559 was introduced to keep up with demand for new numbers around Fresno and Visalia. Existing numbers kept their codes — 559 simply opened fresh inventory for the area.
As Bakersfield / Santa Clarita grew, 661 was introduced to keep up with demand for new numbers around Bakersfield and Lancaster. Existing numbers kept their codes — 661 simply opened fresh inventory for the area.
As Desert / North San Diego grew, 760 was introduced to keep up with demand for new numbers around Palm Springs and Victorville. Existing numbers kept their codes — 760 simply opened fresh inventory for the area.
As North San Diego grew, 858 was introduced to keep up with demand for new numbers around La Jolla and Mira Mesa. Existing numbers kept their codes — 858 simply opened fresh inventory for the area.
As Riverside County grew, 951 was introduced to keep up with demand for new numbers around Riverside and Moreno Valley. Existing numbers kept their codes — 951 simply opened fresh inventory for the area.
As West LA (overlay) grew, 424 was introduced to keep up with demand for new numbers around Santa Monica and El Segundo. Existing numbers kept their codes — 424 simply opened fresh inventory for the area.
As Orange County (overlay) grew, 657 was introduced to keep up with demand for new numbers around Anaheim and Santa Ana. Existing numbers kept their codes — 657 simply opened fresh inventory for the area.
As Desert & North San Diego grew, 442 was introduced to keep up with demand for new numbers around Oceanside and Escondido. Existing numbers kept their codes — 442 simply opened fresh inventory for the area.
As San Fernando Valley (overlay) grew, 747 was introduced to keep up with demand for new numbers around Burbank and Van Nuys. Existing numbers kept their codes — 747 simply opened fresh inventory for the area.
As South Bay (overlay) grew, 669 was introduced to keep up with demand for new numbers around San Jose and Sunnyvale. Existing numbers kept their codes — 669 simply opened fresh inventory for the area.
As San Francisco (overlay) grew, 628 was introduced to keep up with demand for new numbers around San Francisco and Daly City. Existing numbers kept their codes — 628 simply opened fresh inventory for the area.
As Central Coast (overlay) grew, 820 was introduced to keep up with demand for new numbers around Santa Barbara and San Luis Obispo. Existing numbers kept their codes — 820 simply opened fresh inventory for the area.
Make and receive calls and texts from your 831 number on desktop, mobile, or desk phone. One number for everything — no app-switching, no confusion.
Answers, screens, and routes every call to your 831 number around the clock — even when your team is offline or busy.
Every call and text to your 831 number is visible to the whole team — anyone can pick up, reply, or follow up.
Missed calls become readable transcripts delivered to your inbox.
Route Monterey Bay callers to the right person on your schedule.
Already have a 831 number? Bring it — porting is on every plan.
33 area codes covering California
Area code 831 is part of the North American Numbering Plan (NANP) — the system that assigns three-digit codes to geographic regions across the US, Canada, and parts of the Caribbean. Code 831 was assigned to Monterey Bay and serves Salinas and Santa Cruz as its primary markets.
When a call is made to a 831 number, the carrier routes it through the Pacific (PT) time zone switching network. This also means that when customers see a 831 number on their caller ID, they immediately associate it with Monterey Bay — before the call is even answered.
The area code on your caller ID shapes how customers in Monterey Bay decide whether to pick up or ignore your call.
Calls from a local 831 number are far more likely to be answered than calls from an out-of-state or toll-free number. Customers in Monterey Bay recognise the code and trust it as local.
A 831 number tells prospects in California that you operate in their market — even if your team is fully remote or based elsewhere. First impressions happen before the first word.
With a cloud-hosted 831 number, your team can answer calls from any device, in any location. The local area code stays consistent while your team stays flexible.
West listed first
Explore other West area codes and find the right local number for every market you serve.
Set up your 831 number on MeraTalk, compare other US area codes, or read the public record for Monterey Bay.
Read the in-depth guide to the 831 area code — coverage, history, cities, time zone and how to get a number.
On MeraTalkRun your 831 number on a full business phone system — calls, SMS, routing and an AI receptionist included.
On MeraTalkBrowse every US area code by state and find the right local number for the markets you serve.
External referenceSee the FCC's area code relief regulation (47 CFR §52.19) governing how area code 831 and every US area code is administered.
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