Local Phone Numbers
California
840 Area Code
840 Area Code
Get a California Local Phone Number with DialLink
Establish a Local Presence in Southern California
No Office Needed
Looking to connect with customers in Southern California? A 840 area code number gives your business credibility across the same territory serviced by 909 which includes parts of San Bernardino County, eastern Los Angeles County, plus small sections of Riverside County.
With DialLink’s business phone system, SMBs and startups can activate an 840 number quickly. Also, you’ll get advanced call routing, automation, and business messaging tools so your business always sounds local, professional, and responsive.
Why Choose a 840 Area Code?
The 840 area code was introduced as an overlay to the 909 area code on February 23, 2021, providing additional phone numbers for the growing region.
Cities and communities covered by 840 area code include: San Bernardino, Fontana, Ontario, Rancho Cucamonga, Upland, Redlands, Rialto, Colton, Highland, Yucaipa, Pomona, Claremont, La Verne, Diamond Bar, Walnut, West Covina.
This area is home to thriving industries in logistics, manufacturing, retail, healthcare, education, and professional services, making it one of California’s most dynamic business regions.
Get More Than a Local Number
When you choose a local number from DialLink, you're getting more than just digits:
AI Voice Agents
Automate routine calls, appointment booking, and more
AI call tagging & summaries
Get insights into calls and improve follow-ups
Advanced call handling
Customize call flows, routing, and voicemail rules
Work from anywhere
Answer calls on mobile, desktop, web app, or desk phones
Plug-and-play setup
Get started in minutes with no IT experts required
AI-powered business messaging
Get AI-generated suggestions and send replies instantly
Who Can Benefit from a Local Phone Number
Startups entering Southern California markets
Remote-first teams serving clients across West Coast
Professional service providers and consultants
Healthcare, education, and logistics businesses
How to Get a Local Number with DialLink
Sign up for any DialLink plan
Pick a local number during setup, or port your existing one
Start making and receiving calls instantly via mobile, desktop, web, or desk phones
Choose Your Local Phone Number
Frequently Asked Questions
What area code is 840?
The 840 area code is an overlay of the 909 area code, serving parts of San Bernardino County, eastern Los Angeles County, and Riverside County in California.
Where in US is area code 840 located?
Area code 840 is located in Southern California, covering the Inland Empire and parts of eastern Los Angeles County.
What area codes are from California?
What is the area code of the United States?
The United States does not have a single nationwide area code. Instead, it uses the North American Numbering Plan (NANP), which assigns unique three-digit codes to each region.
How many unique numbers can there be per area code?
Each area code can support approximately 7.9 million unique phone numbers.
How do area codes on phone numbers work?
Area codes identify specific geographic regions and ensure calls are routed correctly within the NANP system.
Why do landline phone numbers have area codes?
Area codes were created to organize telephone networks, allow for efficient routing, and make long-distance calling possible.
