List of Connecticut area codes

The U.S. state of Connecticut is divided into two numbering plan areas, each configured as an overlay complex of two area codes each.

Area code	Year created	Parent NPA	Overlay	Numbering plan area
203	1947	–	203/475	Southwestern Connecticut (Fairfield County (except for Sherman); New Haven County, and the towns of Bethlehem, Woodbury, as well as a small part of Roxbury in Litchfield County)
475	2009	203
860	1995	203	860/959	Northern and eastern Connecticut
959	2014	860

Numbering plan areas and area codes of Connecticut

External links

• "New Area Codes Becoming More Prevalent in Connecticut; 475 and 959 Grow in Usage". Connecticut by the Numbers. 2017-10-03. Retrieved 2024-02-12.