Warner is located in Merrimack county New hampshire with a geographic area of 0.8 square miles. The total population in Warner is 638 with 33.7% male and 66.3% female. Children under age 5 represent 11.0% of the population, under age 18 equal 18.0% of the population and over age 65 is 23.2% of the population. The median household income is $35,921, per capita income is $27,240. There are a total of 324 housing units with 21.3% owner occupied. Education includes 40.1% of residents that are high school graduates and 13.9% with a bachelor's degree or higher. The average temperature in Warner in the summer is 68 degrees, and in the winter 23 degrees.