North American Numbers
State · 4 area codes
Connecticut area codes
Connecticut has four area codes in two overlay complexes: 203/475 in the southwest and 860/959 in the north and east.
A · Metros
Major metro areas
Hartford New Haven Stamford Bridgeport
B · Directory
All Connecticut area codes
Every code opens its profile — codes with a full write-up show their place; the rest show live numbering data while their detailed profile is added.
Sources
Wikipedia ↗
List of Connecticut area codes (secondary)
Compiled by North American Numbers, last checked 2026-09-19. How this is made.