Area code 640 covers Trenton and surrounding areas in New Jersey. It was activated in 2018 as an overlay of area code 609. For the full picture, see all New Jersey area codes.
| State | New Jersey |
|---|---|
| Primary city | Trenton |
| Cities also served | Trenton, Atlantic City, Princeton, Ocean City, Pleasantville, Hamilton, Ewing, Long Beach Island |
| Time zone | Eastern (UTC-5 / UTC-4 DST) |
| Year established | September 17, 2018 |
| Original 1947 NPA? | No |
| Parent code | 609 |
| Overlay codes | 609 |
| Currently in use? | Yes, actively assigned |
| Ten-digit dialing required? | Yes |
Cities Served by Area Code 640
Area code 640 serves Central and southern New Jersey, including Trenton, the Jersey Shore, and Atlantic City, including the following cities and communities:
- Trenton
- Atlantic City
- Princeton
- Ocean City
- Pleasantville
- Hamilton
- Ewing
- Long Beach Island
Nearby area codes covering the same broader region include: 609, 856, 201, 551, 732, 848, 862, 908, 973.
How to Get a 640 Phone Number
There are three ways to get a phone number with the 640 area code, each suited to a different need:
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Browse 640 Numbers →- Buy from a premium-number specialist. Companies that hold curated inventories of specific area codes can sell you a 640 number directly, often with a one-time fee and ownership transferred to you (no recurring carrier fees). This is the option for picking a specific memorable number, or for getting an area code that most carriers won’t let you request. Browse our 640 inventory.
- Sign up with a VoIP carrier. Voice-over-IP services (such as Google Voice, OpenPhone, Grasshopper, and many others) can typically provision a 640 number on request, especially for active overlay codes. You won’t usually get to pick the specific number, but you’ll get a working line in the area code. This is the cheapest option for anyone who doesn’t need a particular number.
- Port an existing 640 number. If you already have a 640 phone number with another carrier, you can transfer it (port it) to a new service provider while keeping the number. This works for landlines, cell phones, and VoIP services, though landlines outside of New Jersey sometimes can’t accept inbound ports of 640 numbers due to 911 routing rules.
Looking for a 640 number? 212areacode.com offers premium 640 numbers for Trenton, New Jersey — choose your number, port it to any carrier in 3–5 business days, and pay a one-time fee with no monthly charges. Browse available 640 numbers →
Frequently Asked Questions
Is the 640 area code still in use?
Yes. 640 is actively assigned to new phone lines in Central and southern New Jersey, including Trenton, the Jersey Shore, and Atlantic City.
What is the difference between 640 and 609?
Today they share the same geographic territory in New Jersey. New phone lines in the area may be assigned either code. The two codes work identically for calling, billing, and service.
What is the parent area code of 640?
Area code 640 is an overlay of 609. Both codes serve the same region of New Jersey.
Can I get a 640 number if I don't live in New Jersey?
Yes. Phone numbers are no longer tied to a physical address. With VoIP service or a number broker, you can hold a 640 number from anywhere in the world. The number routes to whatever device or carrier you specify.
Is 640 a scam area code?
No. 640 is a legitimate, active area code for Central and southern New Jersey, including Trenton, the Jersey Shore, and Atlantic City. Like any area code, scammers occasionally spoof 640 caller IDs, but the code itself is heavily used by real New Jersey businesses, government offices, and residents.
What area does the 640 area code cover?
Area code 640 covers the central and southern parts of New Jersey, including Trenton, Princeton, Atlantic City, Ocean City, Pleasantville, Ewing, Hamilton, and the Jersey Shore.
Is 640 an overlay of 609?
Yes. Area code 640 is a direct overlay of area code 609, meaning both codes serve the exact same geographic territory. Ten-digit dialing is required for all calls within the region.
When did the 640 area code go into service?
Area code 640 entered service on September 17, 2018, as the 10th area code assigned to New Jersey and the 405th in the United States.
Why was the 640 area code created?
It was created to relieve number exhaustion in the 609 area code. As demand from cell phones, pagers, and new subscribers depleted available 609 numbers, regulators added 640 as an overlay to supply additional numbers without requiring anyone to change their existing number.
Related Reading
- How Do Area Codes Work?
- How Are Area Codes Assigned?
- Why the Right Area Code Matters
- When Did We Start Using Area Codes?
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