Rochester is a city in Strafford County, New Hampshire, United States. As of the 2010 census, the city population was 29,752, and in 2018 the estimated population was 31,366. The city includes the villages of East Rochester, Gonic, and North Rochester. Rochester is home to Skyhaven Airport.
According to the United States Census Bureau, the city has a total area of 45.8 square miles (118.6 km), of which 45.4 square miles (117.6 km) is land and 0.3 square miles (0.8 km) is water, comprising 0.79% of the town. Rochester is drained by the Salmon Falls, Isinglass and Cochecho rivers. The highest point in Rochester is a southern extension of Nute Ridge, at 581 feet (177 m) above sea level, occupying the northern corner of the city.
New Hampshire Route 16 (the Spaulding Turnpike) is a six-lane controlled-access highway that passes through the city, leading north towards Conway and south to Dover and Portsmouth. U.S. Route 202 uses the turnpike to bypass the city center, then heads northeast into Maine and southwest towards Concord. New Hampshire Route 125 passes north-south through the center of town, leading south to Lee and Epping, and traveling north parallel to NH 16 into Milton. New Hampshire Route 11 leads west to Alton and Laconia and northeast along US 202 into Maine. New Hampshire Route 108 leads southeast to Dover, and New Hampshire Route 202A leads southwest to Strafford and Northwood.
Besides the main downtown part of Rochester, there are two other named communities of significance within the city limits. East Rochester, a small neighborhood, is located near the northeast border of the city along routes 202 and 11, next to the Salmon Falls River, while Gonic Native American name of Squamennegonic, is located south of downtown along NH 125 at a dam on the Cocheco River.
As of the census of 2010, there were 29,752 people, 12,378 households, and 7,936 families residing in the town. There were 13,372 housing units, of which 994, or 7.4%, were vacant. The racial makeup of the town was 95.4% white, 0.8% African American, 0.3% Native American, 1.2% Asian, 0.1% Native Hawaiian or Pacific Islander, 0.4% some other race, and 1.7% from two or more races. 1.8% of the population were Hispanic or Latino of any race.
Of the 12,378 households, 29.9% had children under the age of 18 living with them, 46.8% were headed by married couples living together, 12.2% had a female householder with no husband present, and 35.9% were non-families. 27.8% of all households were made up of individuals, and 10.6% were someone living alone who was 65 years of age or older. The average household size was 2.38, and the average family size was 2.89.
In the town, 22.0% of the population were under the age of 18, 7.6% were from 18 to 24, 26.2% from 25 to 44, 29.3% from 45 to 64, and 14.8% were 65 years of age or older. The median age was 40.7 years. For every 100 females, there were 93.5 males. For every 100 females age 18 and over, there were 89.6 males.
For the period 2011-2015, the estimated median annual income for a household was $46,979, and the median income for a family was $59,519. Male full-time workers had a median income of $42,948 versus $34,688 for females. The per capita income for the town was $26,580. 13.2% of the population and 12.3% of families were below the poverty line. 22.2% of the population under the age of 18 and 8.8% of those 65 or older were living in poverty.
Rochester New Hampshire neighborhoods include: Autumn St, Brenda Lane, Charles Street, Chestnut Hill MHP, Cocheco River Reservoir, Dewey to Fortier, Gonic Mills, Greater Capitol Circle, Highfield Commons, Prescott Estates, Rochester Hill, Rochester Rd/Milton Rd, Royalcrest, Tara Estates, Walnut St