Henderson is located in Jefferson county New york with a geographic area of 0.5 square miles. The total population in Henderson is 236 with 56.4% male and 43.6% female. Children under age 5 represent 15.7% of the population, under age 18 equal 30.5% of the population and over age 65 is 19.1% of the population. The median household income is $30,417, per capita income is $15,285. There are a total of 79 housing units with 39.2% owner occupied. Education includes 39.2% of residents that are high school graduates and 0.0% with a bachelor's degree or higher. The average temperature in Henderson in the summer is 70 degrees, and in the winter 27 degrees.