Plattsburgh is located in Clinton county New york with a geographic area of 5.0 square miles. The total population in Plattsburgh is 19,343 with 47.2% male and 52.8% female. Children under age 5 represent 4.0% of the population, under age 18 equal 14.2% of the population and over age 65 is 16.5% of the population. The median household income is $51,588, per capita income is $27,246. There are a total of 8,003 housing units with 40.3% owner occupied. Education includes 22.7% of residents that are high school graduates and 36.9% with a bachelor's degree or higher. The average temperature in Plattsburgh in the summer is 68 degrees, and in the winter 27 degrees.