There are 16 zip codes in Coos County, New Hampshire. The most populated is 3570, located in Berlin. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
Population
City
35709,485Berlin
35983,463Whitefield
35843,440Lancaster
35813,285Gorham
35762,660Colebrook
35822,062Groveton
35881,609Milan
35901,193North Stratford
35921,023Pittsburg
3583972Jefferson
3595795Twin Mountain
3597670West Stewartstown
3586633Lancaster
3579417Errol
3593408Randolph
3575Bretton Woods
showing: 16 rows

Zip Codes in Coos County, New Hampshire by Population (2024)