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  2. What is the zip code of Darien, CT, 06820

Darien (CT) Zip Code is 06820 Latest Details Jul, 2025

Updated: 07-07-2025

Darien (CT) zip Code is 06820, Postal Code details. Darien is located in state CT, United States.

Find Zip Code 06820 Details

ZIP code 06820 is located in Darien CT in the United States.

Postal Code United States Zip Code 06820 Latest update Darien, CT
Zip Code / Postal Code 06820

City

Darien

State Code

CT

County

Fairfield, United States

Postal Locations

Darien, CT - Zip Code is - 06820

Postal

United States Postal Service USPS Link

Delivery Type

Package Delivery and first class mail.

The zip code 06820 is an essential part of the postal system in Darien, CT. Located in a vibrant part of the city, this zip code covers a variety of neighborhoods, offering residents and businesses a unique blend of suburban comfort and urban convenience. Whether you're looking to send mail, relocate, or simply learn more about the area, Darien has a lot to offer.

FAQ about Zip Code 06820, Darien, (CT)

What is Zip code Darien?

Darien Zip Code: 06820, used by the Darien Post Office and USPS, is a Zone Improvement Plan code that ensures faster, accurate mail delivery in Fairfield, CT. Represented by the American Postal Workers Union (APWU), USPS oversees postal operations.

What is Postal code of area Darien?

Darien Postal Code is: 06820

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