Plaistow (/ˈplæstaʊ/, traditionally /-toʊ/) is a town in Rockingham County, New Hampshire, United States. The population was 7,609 at the 2010 census.
According to the United States Census Bureau, the town has a total area of 10.64 square miles (27.55 km), of which 0.01 square miles (0.02 km), or 0.09%, are water. The highest point in Plaistow is an unnamed summit at 384 feet (117 m) above sea level near the town’s northern end.
As of the census of 2000, there were 7,747 people, 2,871 households, and 2,150 families residing in the town. The population density was 728.8 people per square mile (281.4/km²). There were 2,927 housing units at an average density of 275.4 per square mile (106.3/km²). The racial makeup of the town was 98.33% White, 0.21% African American, 0.10% Native American, 0.50% Asian, 0.30% from other races, and 0.56% from two or more races. Hispanic or Latino of any race were 1.32% of the population.
There were 2,871 households out of which 35.6% had children under the age of 18 living with them, 60.1% were married couples living together, 10.7% had a female householder with no husband present, and 25.1% were non-families. 19.1% of all households were made up of individuals and 6.0% had someone living alone who was 65 years of age or older. The average household size was 2.69 and the average family size was 3.10.
In the town, the population was spread out with 25.8% under the age of 18, 7.0% from 18 to 24, 32.0% from 25 to 44, 25.0% from 45 to 64, and 10.1% who were 65 years of age or older. The median age was 37 years. For every 100 females, there were 95.7 males. For every 100 females age 18 and over, there were 94.9 males.
The median income for a household in the town was $61,707, and the median income for a family was $66,852. Males had a median income of $45,756 versus $31,657 for females. The per capita income for the town was $25,255. About 2.1% of families and 3.2% of the population were below the poverty line, including 1.4% of those under age 18 and 7.5% of those age 65 or over.
Plaistow New Hampshire neighborhoods include: North Main 121A, Pollard Rd, Timberlane