Litchfield is a town in Hillsborough County, New Hampshire, United States. The population was 8,271 at the 2010 census, with an estimated population in 2017 of 8,502.
According to the United States Census Bureau, the town has a total area of 15.4 square miles (40 km), of which 15.1 sq mi (39 km) is land and 0.3 sq mi (0.78 km) is water, comprising 2.27% of the town. The highest point in Litchfield is the summit of Rocky Hill, located in the Litchfield State Forest, at 357 feet (109 m) above sea level. The town is bordered to the north by Manchester, to the east by Londonderry in Rockingham County, to the south by Hudson, to the west by Merrimack, and to the extreme southwest by Nashua, with the Merrimack River separating Litchfield from both Merrimack and Nashua. There is no bridge connecting Litchfield and Merrimack; the closest river crossings are to the south between Nashua and Hudson, and to the north between Manchester and Bedford.
There are two islands in the Merrimack River within the borders of Litchfield. The islands have been called “Minnewawa” and “Nunnehaha”, the Naticook Islands, and Reed’s Islands. The northern island is located within Litchfield, while the southern island is essentially split down the middle by the boundary between Litchfield and Merrimack, forming the only land border between the two towns. Merrimack owns both islands.
As of the census of 2000, there were 7,360 people, 2,357 households, and 2,031 families residing in the town. The population density was 487.5 people per square mile (188.2/km²). There were 2,389 housing units at an average density of 158.3 per square mile (61.1/km²). The racial makeup of the town was 97.72% White, 0.53% African American, 0.29% Native American, 0.57% Asian, 0.15% from other races, and 0.75% from two or more races. Hispanic or Latino of any race were 0.83% of the population.
There were 2,357 households out of which 53.4% had children under the age of 18 living with them, 75.3% were married couples living together, 7.4% had a female householder with no husband present, and 13.8% were non-families. 9.5% of all households were made up of individuals and 1.4% had someone living alone who was 65 years of age or older. The average household size was 3.12 and the average family size was 3.35.
In the town, the population was spread out with 33.4% under the age of 18, 5.4% from 18 to 24, 37.8% from 25 to 44, 19.9% from 45 to 64, and 3.5% who were 65 years of age or older. The median age was 33 years. For every 100 females, there were 101.1 males. For every 100 females age 18 and over, there were 98.1 males.
The median income for a household in the town was $73,302, and the median income for a family was $76,931. Males had a median income of $46,809 versus $33,488 for females. The per capita income for the town was $25,203. About 2.2% of families and 2.1% of the population were below the poverty line, including 1.6% of those under age 18 and 12.1% of those age 65 or over.
Litchfield New Hampshire neighborhoods include: Litchfield, Pilgrim Drive, Stonehenge Apartments, Weatherstone Estates