Fremont is a town in Rockingham County, New Hampshire, United States. The population was 4,283 at the 2010 census. Fremont is crossed by the Rockingham Recreation Trail (a rail trail) and NH Route 107.
According to the United States Census Bureau, the town has a total area of 17.4 square miles (45 km), of which 17.2 sq mi (45 km) is land and 0.2 sq mi (0.52 km) is water, comprising 1.44% of the town. The highest point in Fremont is an unnamed summit, with an elevation of 322 feet (98 m) above sea level, near the town’s western border. It is drained by the Exeter River. Fremont lies fully within the Piscataqua River (Coastal) watershed.
As of the census of 2000, there were 3,510 people, 1,165 households, and 983 families residing in the town. The population density was 204.6 people per square mile (79.0/km²). There were 1,201 housing units at an average density of 70.0 per square mile (27.0/km²). The racial makeup of the town was 98.15% White, 0.06% African American, 0.06% Native American, 0.34% Asian, 0.51% from other races, and 0.88% from two or more races. Hispanic or Latino of any race were 0.77% of the population.
There were 1,165 households out of which 44.0% had children under the age of 18 living with them, 74.1% were married couples living together, 5.8% had a female householder with no husband present, and 15.6% were non-families. 10.4% of all households were made up of individuals and 3.5% had someone living alone who was 65 years of age or older. The average household size was 2.99 and the average family size was 3.20.
In the town, the population was spread out with 29.1% under the age of 18, 5.3% from 18 to 24, 38.0% from 25 to 44, 20.5% from 45 to 64, and 7.2% who were 65 years of age or older. The median age was 36 years. For every 100 females, there were 96.4 males. For every 100 females age 18 and over, there were 96.4 males.
The median income for a household in the town was $62,171, and the median income for a family was $63,808. Males had a median income of $45,560 versus $27,964 for females. The per capita income for the town was $24,082. About 3.8% of families and 4.2% of the population were below the poverty line, including 5.1% of those under age 18 and 5.0% of those age 65 or over.