Local Phone Numbers
New Jersey
640 Area Code
640 Area Code
Get a New Jersey Local Phone Number with DialLink
Establish a Local Presence in New Jersey
No Office Needed
Want to reach customers in Trenton, Atlantic City, or Princeton? A 640 area code lets your business appear local across central and southern New Jersey. It overlays the existing 609 area code, so new numbers can be issued without forcing changes on current 609 number owners.
With DialLink’s business phone system, you can choose a 640 area code number, or port your existing 609 phone number, and instantly use features like advanced call routing, unified business messaging, and reliable local dialing.
Why Choose a 640 Area Code?
The 640 overlay, together with 609, serves this region: Trenton, Princeton, Hamilton, Ewing, Atlantic City, Pleasantville, and many coastal towns along the Jersey Shore.
Having a local phone number in this area helps businesses be more trustworthy to locals, improves call answer rates, and supports marketing and customer support efforts in a region with a lot of tourism, government, education, and coastal commerce.
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
Local businesses in Trenton, Princeton, Hamilton, Atlantic City
Real-estate, lawyers, and service providers wanting a trusted local ID
Remote/distributed teams serving clients in central and southern NJ
Institutions like universities, government offices, health services
Tourism, hospitality, and Shore-area businesses needing to sound local
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
Where is the 640 area code located?
The 640 area code covers central and southern New Jersey, including cities like Trenton, Princeton, and Atlantic City. It shares the same region as the 609 area code.
What is the 640 area code an overlay for?
The 640 area code is an overlay for 609, serving the exact same geographic area.
What is an overlay area code?
An overlay area code is assigned to the same region as an existing one. It ensures more phone numbers are available without forcing existing customers to change their numbers.
How many area codes are in the USA?
There are 300+ active area codes in the United States, with more being added as demand grows.
Can I keep my 609 number if I switch to 640?
Absolutely. Existing 609 numbers are not affected. New customers may be assigned a 640 number, but both area codes work in the same region.
Why was the 640 area code introduced?
It was introduced to ensure a continuing supply of phone numbers for the central and southern New Jersey region, as 609 was running out of available numbers.
