Somersworth is a city in Strafford County, New Hampshire, United States. The population was 11,855 at the 2020 census.  Somersworth has the smallest area  and third-lowest population of New Hampshire's 13 cities.
The city is crossed by New Hampshire Routes 4, 9, 16 (the Spaulding Turnpike), 108, and 155, plus U.S. Route 4. It is bordered by the town of Newington to the south (across the inlet to Great Bay ), Madbury to the southwest, Barrington and Rochester to the northwest, and Somersworth and Rollinsford to the northeast.
Apr 07, 2022 · Now on to numbers 11-100 Biggest in New Hampshire. We hope that you find the big city, or really any city, that's right for you. Below is a list of the rest of the biggest cities along with every other place in New Hampshire. Have fun snacking around in the Granite State! For more reading on New Hampshire, check out: