Groton, Connecticut
Eastern Time Zone (UTC-5) · CT · —
About Area Codes in Groton, Connecticut
Groton, Connecticut is served by 2 area codes: 860, 959. When multiple area codes serve the same geographic area, it typically indicates overlay codes have been added to accommodate growing demand for phone numbers. All local calls within Groton require 10-digit dialing. The city is in the Eastern time zone (UTC-5).
Other cities in area code 860
Frequently Asked Questions
What area code is Groton, Connecticut?
Groton, Connecticut uses area codes 860 and 959.
What time zone is Groton in?
Groton is in the Eastern time zone (UTC-5).
Do I need to dial 10 digits when calling Groton?
Yes, all local calls in Groton require 10-digit dialing because the area is served by multiple overlay area codes.
When was area code 860 created?
Area code 860 was established in 1995 as a geographic split from a larger area code region to serve the growing population.
What cities share area code 860 with Groton?
Other cities sharing area code 860 with Groton include Avon, Bristol, Enfield, Farmington, Glastonbury, among others.
Groton, CT · Eastern Time Zone