Chaumont (/ʃəˈmoʊ/ shə-MOH) is a village in Jefferson County, New York, in the United States. Its population was 624 at the 2010 census. The village is named for Jacques-Donatien Le Ray de Chaumont, son of Benjamin Franklin’s landlord and friend at Passy in France. The village of Chaumont is in the town of Lyme and is northwest of Watertown.
Chaumont is in the west-central part of Jefferson County, in the northeastern portion of the town of Lyme. According to the United States Census Bureau, the village has a total area of 1.1 square miles (2.8 km), of which 0.97 square miles (2.5 km) are land and 0.1 square miles (0.2 km), or 8.78%, are water.
The village is on the south side of the Chaumont River, where it empties into Chaumont Bay, an arm of Lake Ontario. Much of the village is on a peninsula, which ends at Independence Point.
New York State Route 12E passes through the village as Main Street. The highway leads southeast 13 miles (21 km) to Watertown, the county seat, and northwest 12 miles (19 km) to Cape Vincent on the St. Lawrence River. County Route 179 (Evans Street) enters the village from the northeast and leads 6 miles (10 km) to Depauville.
As of the census of July 2009, there were 638 people, up 7.8% since 2000. 46.8%(298) of residents were male and 53.2%(340) were female. The median resident age at this time was 38.8 years. The 2000 census recorded 592 people, 233 households, and 143 families residing in the village. The population density was 578.2 people per square mile (224.1/km²). There were 273 housing units at an average density of 266.6 per square mile (103.3/km²). The racial makeup of the village was 96.79% White, 1.69% African American, 0.68% Native American, and 0.84% from two or more races. Hispanic or Latino of any race were 1.01% of the population.
There were 233 households out of which 30.5% had children under the age of 18 living with them, 47.6% were married couples living together, 11.2% had a female householder with no husband present, and 38.2% were non-families. 33.0% of all households were made up of individuals and 19.7% had someone living alone who was 65 years of age or older. The average household size was 2.48 and the average family size was 3.22.
In the village, the population was spread out with 25.0% under the age of 18, 9.8% from 18 to 24, 27.0% from 25 to 44, 22.6% from 45 to 64, and 15.5% who were 65 years of age or older. The median age was 39 years. For every 100 females, there were 87.9 males. For every 100 females age 18 and over, there were 80.5 males.
The estimated median household income was $50,471 in 2008. In 2000 the income was estimated to be $37,750 and the median income for a family was $49,107. Males had a median income of $34,375 versus $26,000 for females. The per capita income for the village was $16,608. About 1.6% of families and 8.4% of the population were below the poverty line, including 4.2% of those under age 18 and 9.5% of those age 65 or over.