Hermon is a town in St. Lawrence County, New York, United States. The population was 1,108 at the 2010 census. Hermon is named after Mount Hermon, in Syria.
According to the United States Census Bureau, the town has a total area of 54.2 square miles (140.4 km²), of which, 53.4 square miles (138.4 km²) of it is land and 0.8 square miles (1.9 km²) of it (1.38%) is water.
As of the census of 2000, there were 1,069 people, 398 households, and 284 families residing in the town. The population density was 20.0 people per square mile (7.7/km²). There were 591 housing units at an average density of 11.1 per square mile (4.3/km²). The racial makeup of the town was 98.22% White, 0.75% Black or African American, 0.65% Asian, and 0.37% from two or more races. Hispanic or Latino of any race were 0.37% of the population.
There were 398 households out of which 35.2% had children under the age of 18 living with them, 52.3% were married couples living together, 10.6% had a female householder with no husband present, and 28.4% were non-families. 20.6% of all households were made up of individuals and 9.3% 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 3.04.
In the town, the population was spread out with 28.3% under the age of 18, 6.8% from 18 to 24, 25.6% from 25 to 44, 26.4% from 45 to 64, and 12.9% who were 65 years of age or older. The median age was 38 years. For every 100 females, there were 107.2 males. For every 100 females age 18 and over, there were 100.8 males.
The median income for a household in the town was $34,500, and the median income for a family was $35,813. Males had a median income of $31,726 versus $22,813 for females. The per capita income for the town was $13,736. About 15.0% of families and 19.6% of the population were below the poverty line, including 28.0% of those under age 18 and 14.2% of those age 65 or over.