Hollis is a town in Hillsborough County, New Hampshire, United States. The population was 7,684 at the 2010 census. The town center village is listed on the National Register of Historic Places as Hollis Village Historic District.
According to the United States Census Bureau, the town has a total area of 32.3 square miles (84 km), of which 31.8 sq mi (82 km) is land and 0.6 sq mi (1.6 km) is water, comprising 1.76% of the town. The highest point in Hollis is the summit of Birch Hill, at 821 feet (250 m) above sea level, located near the town’s western border.
The Nashua River flows through the southeast corner of the town out of Pepperell, Massachusetts and into Nashua. The Nissitissit River flows through the western part of the town. Hollis lies fully within the Merrimack River watershed.
Hollis population by age
As with many of the towns on the New Hampshire border with Massachusetts, Hollis is rapidly changing from mixed-use farmland (apple orchards, corn, pumpkins, and other vegetables) to a bedroom community for the 54% of working residents who work elsewhere in New Hampshire, and the 30% who work out of state. Significant new development projects continue to be started, to the concern of some of the longer-term residents who have concerns about pressure on the town’s school system and impact on open space.
As of the census of 2000, there were 7,015 people, 2,440 households, and 2,025 families residing in the town. The population density was 221.0 people per square mile (85.3/km²). There were 2,491 housing units at an average density of 78.5 per square mile (30.3/km²). The racial makeup of the town was 96.59% White, 0.44% African American, 0.11% Native American, 1.65% Asian, 0.01% Pacific Islander, 0.17% from other races, and 1.01% from two or more races. Hispanic or Latino of any race were 0.93% of the population.
There were 2,440 households out of which 42.0% had children under the age of 18 living with them, 74.9% were married couples living together, 5.8% had a female householder with no husband present, and 17.0% were non-families. 13.4% of all households were made up of individuals and 4.8% had someone living alone who was 65 years of age or older. The average household size was 2.88 and the average family size was 3.16.
In the town, the population was spread out with 29.6% under the age of 18, 3.8% from 18 to 24, 28.5% from 25 to 44, 29.8% from 45 to 64, and 8.3% who were 65 years of age or older. The median age was 40 years. For every 100 females, there were 99.0 males. For every 100 females age 18 and over, there were 98.0 males.
The median income for a household in the town was $92,847, and the median income for a family was $104,737. Males had a median income of $76,025 versus $46,161 for females. The per capita income for the town was $44,936. About 2.8% of families and 2.6% of the population were below the poverty line, including 1.7% of those under age 18 and 3.6% of those age 65 or over.
The table to the right and nearby chart, taken primarily from historical data from the U.S. Census Bureau, shows the population of Hollis from 1767 through 2010.
After nearly doubling in population over the last 33 years of the 18th century, Hollis’ population consistently declined (excepting only the decade of the 1850s and the first decade of the 20th century) for 120 years, not returning to the levels of 1800 until sometime during the 1950s. Since 1930, Hollis’ population has consistently grown, particularly during the 1950s, ’60s, and ’70s.
Hollis New Hampshire neighborhoods include: Colburn Lane, Southeast Hollis, Southern Hollis