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ZIP code 06820 is located in southwest Connecticut and covers a slightly less than average land area compared to other ZIP codes in the United States. It also has a slightly higher than average population density.
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1 lip 2024 · ZIP Code 06820 is located in the city of Darien, Connecticut and covers 12.654 square miles of land area. It is also located within Fairfield Planning Region. While 06820 may be known by these alias names, the USPS advises not to use them when addressing mail to this ZIP Code: Noroton, Noroton Heights and Tokeneke.
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