Lisbon is a town in New London County, Connecticut, United States, by road northeast of Norwich. The population was 4,195 at the 2020 census. The town center is also known as the village of Newent. The town school is Lisbon Central School. Its only postal code, 06351, is Jewett City, Connecticut, which is a village of the town of Griswold, Connecticut and encompasses all of Lisbon and Griswold. History The town incorporated from Norwich in 1786. The community was named after Lisbon, the capital of Portugal. Geography According to the United States Census Bureau, the town has a total area of , of which is land and , or 2.29%, is water. The Taft Tunnel carries the Providence and Worcester Railroad through the hills along the Quinebaug River. Demographics As of the census of 2000, there were 4,069 people, 1,525 households, and 1,181 families living in the town. The population density was . There were 1,563 housing units at an average density of . The racial makeup of the town was 96.71% White, 0.32% African American, 0.42% Native American, 0.47% Asian, 0.37% from other races, and 1.72% from two or more races. Hispanic or Latino of any race were 0.57% of the population. There were 1,525 households, out of which 36.9% had children under the age of 18 living with them, 63.9% were married couples living together, 8.9% had a female householder with no husband present, and 22.5% were non-families. 18.6% of all households were made up of individuals, and 8.0% had someone living alone who was 65 years of age or older. The average household size was 2.67 and the average family size was 3.03. In the town, the population was spread out, with 26.0% under the age of 18, 6.1% from 18 to 24, 30.4% from 25 to 44, 26.0% from 45 to 64, and 11.4% who were 65 years of age or older. The median age was 39 years. For every 100 females, there were 98.7 males. For every 100 females age 18 and over, there were 94.7 males. The median income for a household in the town was $55,149, and the median income for a family was $61,888. Males had a median income of $40,043 versus $25,833 for females. The per capita income for the town was $22,476. About 1.8% of families and 3.2% of the population were below the poverty line, including 2.4% of those