Madrid is located in St. lawrence county New york with a geographic area of 3.7 square miles. The total population in Madrid is 805 with 51.1% male and 48.9% female. Children under age 5 represent 7.6% of the population, under age 18 equal 30.7% of the population and over age 65 is 9.1% of the population. The median household income is $59,286, per capita income is $23,016. There are a total of 258 housing units with 60.1% owner occupied. Education includes 35.7% of residents that are high school graduates and 31.4% with a bachelor's degree or higher. The average temperature in Madrid in the summer is 70 degrees, and in the winter 27 degrees.