Connecticut · Eastern Time
959 Area Code
Area code 959 is in Connecticut, serving northern, central and eastern Connecticut including Hartford, New Britain and New London. It is in the Eastern Time zone. It shares its territory with overlay code 860, so 10-digit dialing is required.
Last updated October 1, 2026 · Source: NANPA
Where is the 959 area code?
959 is a Connecticut area code covering northern, central and eastern Connecticut including Hartford, New Britain and New London. In the wider directory it sits in the Northeast region.
Cities in the 959 area code
- Hartford
- New Britain
- West Hartford
- Bristol
- Manchester
- Middletown
- Norwich
- Enfield
- Glastonbury
- Southington
- Torrington
- New London
- Groton
- Vernon
Counties served by 959
Hartford County, Tolland County, Windham County, New London County, Middlesex County and Litchfield County.
959 overlay codes and dialing
The 959 territory is covered by an overlay of 2 area codes: 860, 959. All of them serve the same geographic area, and the original code is 860. Because more than one code covers the same ground, 10-digit dialing is mandatory — you must dial the area code for every local call. New phone lines may be assigned any of these codes.
History of the 959 area code
959 went into service on August 30, 2014 as an overlay of 860, relieving number exhaustion in the Hartford area. Rather than splitting the region, the overlay lets existing customers keep their numbers while new lines draw from the added code. Learn more in our overlay guide.
Is 959 a scam or spam risk?
959 is a legitimate geographic area code, not a premium or toll line, so a call from it costs you nothing extra. That said, scammers frequently spoof real local area codes to look familiar on caller ID. A genuine 959 number on your screen is no guarantee the caller is in Hartford, CT or trustworthy. See spam & scam-risk area codes for how spoofing works and how to respond.
Explore more
See every code in Connecticut, compare codes across the Northeast region, or view all Eastern Time codes. You can also browse the 9XX block or the complete numeric list of US area codes.
New to how this all works? Start with how area codes work, then read up on overlays, 10-digit dialing, and spam & scam-risk codes. To check another number, use the area code lookup tool.
Quick answers
959 area code FAQ
Where is the 959 area code?
The 959 area code is in Connecticut, covering northern, central and eastern Connecticut including Hartford, New Britain and New London, in the Northeast region.
What cities are in the 959 area code?
Cities in the 959 area code include Hartford, New Britain, West Hartford, Bristol, Manchester, Middletown, Norwich, Enfield, Glastonbury and Southington.
What time zone is 959 in?
959 is in the Eastern Time zone.
What is the overlay for the 959 area code?
959 shares its territory with 860. Both codes (860, 959) serve the same area, so 10-digit dialing is required for every call.
When did the 959 area code start?
959 went into service on August 30, 2014 as an overlay of 860.
Do I have to dial 10 digits for 959?
Yes. Because 959 is an overlay area, you must dial the full 10-digit number (area code + 7 digits) for every call.
Is 959 a toll-free or premium code?
No. 959 is a standard geographic area code, so calling it costs the same as any local or long-distance call on your plan. Toll-free calls use 800, 888, 877, 866, 855, 844 or 833.