Area code 203
Get a 203 phone number
To get a 203 phone number, pick an available 203 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
- New Haven, CT, Connecticut
- Time zone
- Eastern (GMT -5)
The 203 area code covers New Haven, CT and nearby Connecticut communities.
Top 20 203 numbers available right now
Pulled live from our carrier network. Last updated: August 24, 2026 at 10:04 PM UTC.
Every number requires an AvoCall plan. Current web pricing is verified at checkout, and number availability changes often.
About the 203 area code
Connecticut is home to area code 203, anchored by New Haven. Bridgeport, Stamford, Waterbury, and Norwalk are also inside its footprint, which sits in the Eastern time zone.
One of the first codes put into use in 1947, 203 once reached much farther across the state until 860 was split off. Today it is paired with 475 as an overlay, and dialing a local number takes all ten digits.
Dialing note: 203 is part of an overlay complex with 475, so local calls in this area are dialed with all ten digits.
Numbering details on this page (service dates and overlay status) are checked against the NANPA numbering registry. Registry data as of 07/16/2026.
203 phone number FAQ
- How do I get a 203 phone number?
- Pick an available 203 number and sign up for AvoCall. Your new New Haven, CT 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 203 area code?
- It serves New Haven, CT and nearby cities in Connecticut, including Bridgeport, New Haven, Stamford.
- Can I receive verification codes on a 203 number?
- AvoCall 203 numbers support calling and messaging. Verification-text compatibility varies by sender; short-code and 2FA delivery is not guaranteed.