Castorland is a village in the southeast part of the Town of Denmark in Lewis County, New York, United States; it is north of Lowville and southeast of Carthage. The population was 351 at the 2010 census. The name is derived from the scientific name for “Beaver”.
Castorland is located at 43°53′15″N 75°30′50″W / 43.88750°N 75.51389°W / 43.88750; -75.51389 (43.887379, -75.514002).
According to the United States Census Bureau, the village has a total area of 0.3 square miles (0.78 km), all land.
The village is west of the Black River, near the point where the Beaver River enters.
The village is located on New York State Route 410.
As of the census of 2000, there were 306 people, 115 households, and 74 families residing in the village. The population density was 1,084.5 people per square mile (422.0/km²). There were 136 housing units at an average density of 482.0 per square mile (187.5/km²). The racial makeup of the village was 97.06% White, 0.65% African American, 0.33% Asian, 0.33% Pacific Islander, 0.65% from other races, and 0.98% from two or more races. Hispanic or Latino of any race were 1.31% of the population.
There were 115 households out of which 28.7% had children under the age of 18 living with them, 58.3% were married couples living together, 3.5% had a female householder with no husband present, and 34.8% were non-families. 26.1% of all households were made up of individuals and 14.8% had someone living alone who was 65 years of age or older. The average household size was 2.56 and the average family size was 3.23.
In the village, the population was spread out with 24.8% under the age of 18, 9.5% from 18 to 24, 28.1% from 25 to 44, 22.5% from 45 to 64, and 15.0% who were 65 years of age or older. The median age was 38 years. For every 100 females, there were 91.3 males. For every 100 females age 18 and over, there were 85.5 males.
The median income for a household in the village was $33,125, and the median income for a family was $45,625. Males had a median income of $35,714 versus $16,806 for females. The per capita income for the village was $12,101. About 1.4% of families and 13.3% of the population were below the poverty line, including 6.7% of those under the age of eighteen and 10.0% of those sixty five or over.