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Groton, CT has one area code which is area code 860. Groton, CT has used this area code since 1995 when it was
created from a split of area code 203. Other larger communities, including Groton CT, which use area code 860 are Bristol, Central Manchester, East Hartford, Hartford, Middletown, New Britian, New London,
Newington, Norwich, Torrington, West Hartford and Wethersfield. Groton, CT does not utilize any area code overlays. Area code 959 has been proposed as an overlay of area code 860, which would include Groton,
CT, but no implementation date has been established. |
