Lisbon is a town in Grafton County, New Hampshire, United States. The population was 1,595 at the 2010 census. Lisbon hosts an annual lilac festival on Memorial Day weekend.
According to the United States Census Bureau, the town has a total area of 26.6 square miles (68.9 km), of which 26.2 square miles (67.9 km) is land and 0.5 square miles (1.3 km) is water comprising 1.67% of the town.
The highest point in town is an unnamed hill east of Pearl Lake which reaches 1,620 feet (490 m) above sea level. Babbit Hill has an elevation of 1,092 ft (333 m). The Ammonoosuc and Gale rivers flow through the town.
As of the census of 2010, there were 1,595 people, 659 households, and 439 families residing in the town. There were 809 housing units, of which 150, or 18.5%, were vacant. 81 of the vacant units were for seasonal or recreational use. The racial makeup of the town was 97.8% white, 0.2% African American, 0.2% Native American, 0.0% Asian, 0.0% Native Hawaiian or Pacific Islander, 0.4% some other race, and 1.4% from two or more races. 0.9% of the population were Hispanic or Latino of any race.
Of the 659 households, 30.8% had children under the age of 18 living with them, 48.7% were headed by married couples living together, 11.4% had a female householder with no husband present, and 33.4% were non-families. 25.5% of all households were made up of individuals, and 8.5% were someone living alone who was 65 years of age or older. The average household size was 2.42, and the average family size was 2.87.
In the town, 22.9% of the population were under the age of 18, 7.0% were from 18 to 24, 23.4% from 25 to 44, 32.3% from 45 to 64, and 14.3% were 65 years of age or older. The median age was 42.8 years. For every 100 females, there were 100.4 males. For every 100 females age 18 and over, there were 97.0 males.
For the period 2011-2015, the estimated median annual income for a household was $47,946, and the median income for a family was $53,700. Male full-time workers had a median income of $36,490 versus $31,845 for females. The per capita income for the town was $23,897. 16.6% of the population and 8.9% of families were below the poverty line. 27.8% of the population under the age of 18 and 11.0% of those 65 or older were living in poverty.