There are 16 zip codes in Strafford County, New Hampshire. The most populated is 3820, located in Dover. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
Population
City
0382032,925Dover
0386722,349Rochester
0382415,073Durham
0387812,088Somersworth
038259,339Barrington
038356,777Farmington
038686,368Rochester
038614,547Lee
038844,261Strafford
038514,195Milton
038393,856Rochester
038552,711New Durham
038692,427Rollinsford
038232,213Madbury
038871,954Union
03852314Milton Mills

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