Somersworth is a city in Strafford County, New Hampshire, United States. The population was 11,766 at the 2010 census. Somersworth has the smallest area and third-lowest population of New Hampshire’s 13 cities.
Somersworth is located in eastern Strafford County at 43°15′14″N 70°52′32″W / 43.25389°N 70.87556°W / 43.25389; -70.87556 (43.253783, -70.875499).
According to the United States Census Bureau, the city has a total area of 10.0 square miles (25.9 km), of which 9.8 square miles (25.4 km) are land and 0.2 square miles (0.5 km) are water, comprising 1.97% of the city. Somersworth is bordered to the northeast by the Salmon Falls River, which is also the state boundary with Maine. The highest point in Somersworth is Prospect Hill rising just west of the city center, on which the city reservoir is built. The hill’s elevation is approximately 310 feet (94 m) above sea level.
New Hampshire Route 9 (High Street) is the main road through the city, leading north into Berwick, Maine, and south into Dover. New Hampshire Route 108 passes through a western portion of the city, leading northwest to Rochester and south to Dover. New Hampshire Route 236 (West High Street) leads west out of downtown to NH 108.
As of the census of 2010, there were 11,766 people, 4,862 households, and 3,044 families residing in the city. There were 5,199 housing units, of which 337, or 6.5%, were vacant. The racial makeup of the city was 89.4% white, 1.4% African American, 0.3% Native American, 5.3% Asian, 0.02% Pacific Islander, 0.9% some other race, and 2.6% from two or more races. 2.5% of the population were Hispanic or Latino of any race.
Of the 4,862 households in the city, 31.6% had children under the age of 18 living with them, 43.9% were headed by married couples living together, 13.5% had a female householder with no husband present, and 37.4% were non-families. 28.5% of all households were made up of individuals, and 10.2% were someone living alone who was 65 years of age or older. The average household size was 2.42, and the average family size was 2.95.
23.2% of residents in the city were under the age of 18, 8.1% were from age 18 to 24, 29.2% were from 25 to 44, 27.7% were from 45 to 64, and 11.8% were 65 years of age or older. The median age was 37.8 years. For every 100 females, there were 91.3 males. For every 100 females age 18 and over, there were 89.3 males.
For the period 2011-15, the estimated median annual income for a household was $54,868, and the median income for a family was $66,086. Male full-time workers had a median income of $47,865 versus $36,935 for females. The per capita income for the city was $25,527. 13.6% of the population and 10.2% of families were below the poverty line, along with 20.0% of people under the age of 18 and 6.9% of people 65 or older.
Somersworth New Hampshire neighborhoods include: Back Road, Bayview, Belanger Dr, Blackwater, Cocheco Shelter, Court Street, Exit 7, Garrison, Historic District, Liberty Way/Indian Brook, Maplewood / Cranbrook, NE Dover, Samuel-Hanson/Mulligan Aves