Mason was first known as "Number One", the easternmost in a line of border towns including area allotted to the Province of New Hampshire after its border with neighboring Massachusetts was fixed in 1739. The town was granted its own charter in 1749 by colonial governor Benning Wentworth, and in 1768 his nephew, Governor John Wentworth, named it in honor of New Hampshire's founder, Captain John Mason, who along with Sir Ferdinando Gorges had been granted the territory in 1622 by the Council of New England. In 1629 the land grant was split between the two proprietors, with Gorges retaining the eastern portion of the territory, and Mason holding the patent with title to the land that became New Hampshire. Greenville was set off from Mason in 1872. Near the center of Mason is the boyhood home of Samuel Wilson, the meat-supplier who is believed to have inspired the Uncle Sam character. The private house is today identified by a state historical marker. Another prominent local figure was Elizabeth Orton Jones, an author, illustrator and teacher better known as "Twig." Jones is noted for her recording of town history and her dedication to Andy's Summer Playhouse, a renowned youth theater founded in Mason. Pickity Place, a local cottage built in 1759 by Ebenezer Blood, was the model for the grandmother's house in Jones' 1948 illustrated version of Little Red Riding Hood. Pickity Place was created by David and Judith Walter. It was also the home of Ron Harry, Boston Gardenorganist from 1983–1995 and for the Boston Celtics in the TD Garden until his death in 2004.
As of the census of 2000, there were 1,147 people, 433 households, and 328 families residing in the town. The population density was 48.0 people per square mile. There were 455 housing units at an average density of 19.0 per square mile. The racial makeup of the town was 98.08% White, 0.17% African American, 0.09% Native American, 0.44% Asian, 0.44% Pacific Islander, and 0.78% from two or more races. Hispanic or Latino of any race were 0.96% of the population. There were 433 households out of which 31.9% had children under the age of 18 living with them, 65.8% were married couples living together, 5.5% had a female householder with no husband present, and 24.2% were non-families. 18.0% of all households were made up of individuals and 6.2% had someone living alone who was 65 years of age or older. The average household size was 2.65 and the average family size was 3.02. in 1909 In the town, the population was spread out with 24.3% under the age of 18, 5.5% from 18 to 24, 33.0% from 25 to 44, 28.8% from 45 to 64, and 8.5% who were 65 years of age or older. The median age was 40 years. For every 100 females, there were 106.3 males. For every 100 females age 18 and over, there were 106.7 males. The median income for a household in the town was $60,433, and the median income for a family was $61,908. Males had a median income of $43,558 versus $26,042 for females. The per capita income for the town was $28,503. About 3.6% of families and 3.4% of the population were below the poverty line, including 3.3% of those under age 18 and 4.9% of those age 65 or over.
Town facilities
Mason is immediately north of the Massachusetts border, with the center of town approximately 5 kilometers from the state line. At the center of town are five public buildings: the library, elementary school, meetinghouse, church, and police station, all situated where Darling Hill, Old Ashby, Merriam Hill, Meetinghouse Hill and Valley roads meet. The students at the public middle and high school are tuitioned to Milford which is northeast of Mason. Also to the west is Greenville, location of the shared post office. On Depot Road, a kilometer down the hill from town center, is the Volunteer Fire and EMS Department and Town Highway Department.
