Round lake is located in Saratoga county New york with a geographic area of 1.1 square miles. The total population in Round lake is 1,245 with 48.8% male and 51.2% female. Children under age 5 represent 21.7% of the population, under age 18 equal 29.9% of the population and over age 65 is 9.8% of the population. The median household income is $76,324, per capita income is $34,911. There are a total of 476 housing units with 82.6% owner occupied. Education includes 14.1% of residents that are high school graduates and 66.0% with a bachelor's degree or higher. The average temperature in Round lake in the summer is 70 degrees, and in the winter 27 degrees.