Area code 603
Get a 603 phone number
To get a 603 phone number, pick an available 603 number below and sign up for AvoCall. Your new number works for calls and texts on the phone you already own over WiFi or data. Current web pricing is verified at checkout. No second SIM and no new device are required.
- Location
- Manchester, NH, New Hampshire
- Time zone
- Eastern (GMT -5)
The 603 area code covers Manchester, NH and nearby New Hampshire communities.
About the 603 area code
Since 1947, area code 603 has belonged to New Hampshire, where it covers Manchester, Nashua, Concord, Derry, and Rochester on Eastern time (GMT -5).
603 was part of the original group of area codes assigned in 1947 and has never been split or overlaid. The same single code has answered for its territory from the beginning, an unbroken assignment now decades old.
Dialing note: 603 has been in service since 1947, making it one of the original North American area codes.
Numbering details on this page (service dates and overlay status) are checked against the NANPA numbering registry. Registry data as of 07/16/2026.
603 phone number FAQ
- How do I get a 603 phone number?
- Pick an available 603 number and sign up for AvoCall. Your new Manchester, NH number works for calls and texts on your existing phone over WiFi or data. Current web pricing is verified at checkout. There is no second SIM and no new device.
- Where is the 603 area code?
- It serves Manchester, NH and nearby cities in New Hampshire, including Manchester, Nashua, Concord.
- Can I receive verification codes on a 603 number?
- AvoCall 603 numbers support calling and messaging. Verification-text compatibility varies by sender; short-code and 2FA delivery is not guaranteed.