Newmarket Zip Codes - Rockingham County NH

Newmarket, NH Zip Code Map

Newmarket, NH is a city located in Rockingham County, New Hampshire and has a land area of 12.59 square miles (32.61 km2). The water area for the city is 1.60 square miles or 4.14 km2. There is one unique zip code in Newmarket, New Hampshire and it is 03857. The area code(s) for Newmarket is 603.

Zip Codes for Newmarket, NH (1)

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03857 Newmarket Rockingham

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