Darien, Connecticut
Eastern Time Zone (UTC-5) · CT · —
About Area Codes in Darien, Connecticut
Darien, Connecticut is served by 2 area codes: 203, 475. 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 Darien require 10-digit dialing. The city is in the Eastern time zone (UTC-5).
Frequently Asked Questions
What area code is Darien, Connecticut?
Darien, Connecticut uses area codes 203 and 475.
What time zone is Darien in?
Darien is in the Eastern time zone (UTC-5).
Do I need to dial 10 digits when calling Darien?
Yes, all local calls in Darien require 10-digit dialing because the area is served by multiple overlay area codes.
When was area code 203 created?
Area code 203 is one of the original 86 area codes established in 1947 as part of the North American Numbering Plan (NANP).
What cities share area code 203 with Darien?
Other cities sharing area code 203 with Darien include Branford, Bridgeport, Cheshire, Danbury, Fairfield, among others.
Darien, CT · Eastern Time Zone