Connecticut area codes
Connecticut has 4 area codes, all on UTC−5 standard time. Each card shows the main cities; open one for its overlays, history and a free lookup.
常见问题
Connecticut area code questions
How many area codes does Connecticut have?
Connecticut has 4 area codes in service: 203, 475, 860 and 959.
What was the original Connecticut area code?
203 was among the original area codes created in 1947.
What is the newest area code in Connecticut?
959, in service since August 30, 2014 as an overlay on 860.
What time zone is Connecticut area codes in?
Eastern.
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Sources: NANPA NPA database (11/04/2026) and Google libphonenumber. Area codes show where a number was assigned, not where its owner is today.