Middlesex Zip Codes

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Middlesex is a county of Connecticut. It has a land area of 370 square miles. The population of Middlesex was 165,676 in 2010 with a positive growth rate of 6.8% since the year 2000.

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• Centerbrook, Chester, Clinton, Cobalt, Cromwell, Deep River, Durham, East Haddam, East Hampton, Essex, Fenwick, Haddam, Haddam Neck, Higganum, Ivoryton, Killingworth, Middle Haddam, Middlefield, Middletown, Moodus, Old Saybrook, Portland, Rockfall, Wesleyan, Westbrook
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