510 Area Code Local Phone Numbers to Build Customer Trust
January 28, 2026

510 Area Code: Get a Local Phone Number for California

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The 510 area code covers the highly dense, vital region of the East Bay in the San Francisco Bay Area, making it an essential choice for businesses seeking a credible local presence in the region’s key technology, shipping, academic, and cultural centers.

Getting a 510 number helps companies build trust, improve call response rates, and connect more effectively with customers across Oakland, Berkeley, Hayward, and the broader Alameda and Contra Costa County areas. The 510 area code is a high-demand code for its region and is overlaid by the 341 area code.

What is 510 Area Code?

The 510 area code is a telephone area code in the North American Numbering Plan (NANP) serving a critical, high-density region of the East Bay in California. It primarily covers the coastal, industrial, and fast-growing metropolitan areas on the eastern side of the San Francisco Bay.

It covers the core of Alameda and Contra Costa counties, including cities like Oakland, Berkeley, Hayward, and Fremont. The 510 area code was created on September 2, 1991, as a split from the original 415 area code, which previously covered the entire Bay Area.

  • State: California 
  • Major Cities/Areas: Oakland, Berkeley, Hayward, Fremont, Richmond, San Leandro, Alameda
  • Time Zone: Pacific Time Zone (PT)
  • Established: 1991
  • Overlay Area Code: 341
  • Primary Uses: Residential lines, neighborhood businesses, major academic institutions, healthcare facilities, and local mobile numbers.

Regions Covered by 510 Area Code

The 510 area code encompasses the core region of the East Bay in the San Francisco Bay Area, serving as a primary and historically significant area code for the region. This area includes major centers of technology, education, and international trade and is overlaid by the 341 area code. 

Here is a comprehensive breakdown of the major counties and cities covered by the 510 area code:

Alameda County
  • Oakland
  • Berkeley
  • Hayward
  • Fremont
  • San Leandro
  • Alameda
  • Castro Valley
  • Union City
  • Newark
  • Albany
  • Emeryville
  • Piedmont
Contra Costa County
  • Richmond
  • San Pablo
  • El Cerrito
  • Hercules
  • Pinole
  • El Sobrante
  • Crockett
  • Rodeo
  • Kensington

Population & Demographics of 510 Area Code

The 510 area code serves the core of the East Bay in California, which is a unique and high-value numbering plan area. The local economy of the region is characterized by exceptionally high income levels. Based on the analysis of Alameda County, the median household income is $126,240 and the average per capita income is $73,582. The region's poverty rate stands at 9.22%.

Demographically, the population is distinctly diverse:

  • Asian residents make up 32.24%.
  • White residents make up 31.99%.
  • Other race residents make up 12.91%.
  • Two or more races make up 11.31%.
  • Black or African American residents make up 9.92%.

510 Area Code Time Zone

The 510 area code, which serves the core of the East Bay in California, is located entirely within the Pacific Time Zone (PT). This means that during standard time, the time zone is Pacific Standard Time (PST), which is UTC-8. During daylight saving time, the time zone is Pacific Daylight Time (PDT), which is UTC-7.

Business Importance of 510 Area Code

The 510 area code adds local trust and credibility, making it valuable for local businesses. Here’s how a business number with the 510 area code is important for your business:

Why Local Numbers Build Trust

When customers see a local 510 area code number, they immediately recognize it as part of their community. This familiarity creates trust and reduces hesitation to answer calls. Research shows that consumers are more likely to pick up calls from numbers with local area codes compared to unfamiliar or out-of-state numbers.

For small businesses, using a local area code 510 number shows commitment to serving the community. For larger enterprises, it signals accessibility and helps build stronger relationships with regional customers.

Enterprise Businesses That Benefit From a Local 510 Number

Some well-known enterprises that would benefit from a local 510 number include:

Finance & Banking

The 510 area code provides a local caller ID that increases customer trust, making it easier for banks to confirm high-value transactions, issue fraud alerts, and manage communications with commercial and retail clientele across the East Bay.

  • Bank of the West: Maintains a significant corporate presence and headquarters history in the East Bay.
  • Wells Fargo: Operates a massive regional network with major administrative hubs and branches throughout Oakland and Fremont.
  • JPMorgan Chase & Co.: Provides extensive commercial and consumer banking services with a high-density branch presence in Berkeley and Hayward.
  • Mechanics Bank: A leading California-based bank with deep roots and specialized business services throughout the 510 area.
  • Patelco Credit Union: One of the largest credit unions in the nation, headquartered in the East Bay to serve the local workforce.

Healthcare

The 510 area code helps the East Bay's world-class hospitals and clinics reduce missed appointments and provides local, trusted lines for patient support, specialty care, and academic medical coordination.

  • Kaiser Permanente: Headquartered in Oakland, serving as the primary healthcare provider and a major employer for the entire region.
  • UCSF Benioff Children’s Hospital Oakland: A nationally ranked pediatric medical center and research institution located in North Oakland.
  • Alta Bates Summit Medical Center: A major multi-campus hospital system providing comprehensive care in Berkeley and Oakland.
  • Alameda Health System (Highland Hospital): The primary public healthcare provider and trauma center serving the dense population of Alameda County.
  • Washington Hospital Healthcare System: A premier multi-specialty hospital district serving the southern portion of the 510 area in Fremont.

Logistics & Transportation

The 510 code provides dedicated local service lines that improve coordination for international trade, shipping, and the complex freight infrastructure centered around one of the busiest ports in the United States.

  • Port of Oakland: A major global container ship facility that serves as a primary hub for international trade on the West Coast.
  • Matson, Inc.: A leading ocean transportation company with major operations and logistics coordination based in the East Bay.
  • FedEx / UPS / DHL: Maintain massive sorting hubs and distribution centers in Oakland and San Leandro to service the Bay Area.
  • BART (Bay Area Rapid Transit): Headquartered in Oakland, overseeing the regional rail system that connects the East Bay to the rest of the region.
  • GSC Logistics: Provides high-volume drayage and supply chain solutions specifically tailored to the Port of Oakland operations.

Information Technology

The 510 code enables IT companies and hardware manufacturers to offer localized sales, support, and deployment hotlines that businesses trust, especially within the East Bay's thriving tech corridor.

  • Tesla: Operates its massive vehicle assembly factory in Fremont, serving as a pillar of high-tech manufacturing in the 510 area.
  • Workday: A global leader in enterprise cloud applications for finance and human resources, headquartered in the East Bay.
  • Marvell Technology: A major semiconductor producer with a significant corporate and engineering presence in the region.
  • Lam Research: A leading supplier of wafer fabrication equipment to the semiconductor industry, headquartered in Fremont.
  • Scientific Learning: A prominent education technology company providing research-based software solutions from its Oakland headquarters.

Insurance

The 510 area code offers local numbers for claims, underwriting, and customer assistance, enhancing trust and reducing response times for property and casualty insurance in the high-value Bay Area market.

  • AAA Northern California, Nevada & Utah: Maintains a massive regional headquarters and claims processing center in the East Bay.
  • State Farm: Operates extensive regional claims and agency offices throughout Oakland, Hayward, and Fremont.
  • Farmers Insurance: Provides a wide network of local agents and specialized underwriting services for the diverse residential and commercial needs of the 510 area.
  • Liberty Mutual: Maintains a strong local presence, offering personal and business insurance products tailored to the California market.
  • Brown & Brown Insurance: A major brokerage providing risk management and insurance solutions to the East Bay's commercial sector.

How to Get a 510 Area Code Number?

Setting up your 510 area code number with Goodcall is quick and straightforward. Here’s how it works:

  1. Sign Up: Create your account with Goodcall using basic business details.
  2. Select Your Plan: Choose the pricing plan that best matches your company’s needs.
  3. Complete KYC: Verify your identity and business information for compliance.
  4. Pick a Number: Browse the available 510 numbers and select the one you want.
  5. Customize Agent: Set up your AI-powered answering agent with greetings, call routing, and voicemail preferences.
  6. Go Live: Activate your number and start receiving calls immediately.

Benefits of Using Goodcall for the 510 Area Code

Choosing Goodcall means more than just getting a local number; it means equipping your business with tools to handle calls efficiently.

  • 24/7 Availability: Ensure no customer call is missed.
  • AI Answering Services: Professional, automated responses for smoother communication.
  • Cost-Effective: Flexible pricing designed for small to enterprise-level businesses.
  • Scalable Solutions: Upgrade features as your business grows.
  • Local Credibility: Build customer trust with a recognizable area code.

With these advantages, Goodcall makes it easier for you to manage calls and focus on growing your business.

Pricing Plans for Local Numbers

Our local 510 area code numbers come with affordable pricing plans designed to fit every business size. We offer flexible pricing options that scale with your needs, whether you’re a startup or an established enterprise. Additionally, you can save 30% on annual subscriptions, giving your business more value at a lower cost.

Nearby Area Codes to 510

Areas Area Code
Concord, Walnut Creek, Livermore, Antioch, Pleasanton 925
San Francisco, San Rafael, Mill Valley, Sausalito, Larkspur 415, 628
San Mateo, Palo Alto, Redwood City 650
San Jose, Sunnyvale, Santa Clara, Cupertino, Los Gatos 408, 669

FAQs

What is the 510 area code, and where is it located?

The 510 area code serves the East Bay region of the San Francisco Bay Area in California. It covers the majority of Alameda County and portions of western Contra Costa County, representing a vital hub for technology, trade, and education.

What cities does the 510 area code cover?

The 510 area code covers several major cities and suburban hubs across the East Bay, including Oakland, Fremont, Hayward, and Berkeley. 

What time zone is area code 510 in?

The 510 area code, serving the East Bay region of California, is in the Pacific Time Zone (PT).

Does the 510 area code get spam calls?

Like any area code, spam and robocalls do occur, but using a trusted business provider like Goodcall helps filter unwanted calls.

Which types of businesses benefit most from a local 510 number?

Local service providers, tech companies, restaurants, real estate agents, and startups benefit from a 510 number, as it boosts local trust and visibility.

How can I get a local 510 area code number for my business?

You can get a 510 number easily by signing up with Goodcall, choosing your plan, and selecting your preferred local number.

Can I forward calls from my 510 number elsewhere?

Yes. With Goodcall, you can forward calls to any phone, ensuring you never miss a customer inquiry.

How much does it cost to get a 510 area code number?

Goodcall plans are affordable and flexible, at $66 per month per agent annually.

Is the 510 area code toll-free?

No, 510 is not a toll-free area code. It’s a geographic code for California, designed to give businesses a trusted local identity. Toll-free numbers in the US typically begin with prefixes such as 800, 888, 877, or 855.

Last updated:
January 28, 2026

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