Darien Zip Codes - Fairfield County CT

Darien, CT Zip Code Map

Darien, CT is a city located in Fairfield County, Connecticut and has a land area of 12.65 square miles (32.76 km2). The water area for the city is 2.18 square miles or 5.65 km2. There is one unique zip code in Darien, Connecticut and it is 06820. The area code(s) for Darien is 203/475.

Zip Codes for Darien, CT (1)

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06820 Darien Fairfield

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