Lyndhurst is located in Cuyahoga county Ohio with a geographic area of 4.4 square miles. The total population in Lyndhurst is 13,431 with 43.9% male and 56.1% female. Children under age 5 represent 5.6% of the population, under age 18 equal 16.0% of the population and over age 65 is 28.1% of the population. The median household income is $73,708, per capita income is $46,701. There are a total of 6,423 housing units with 80.7% owner occupied. Education includes 15.7% of residents that are high school graduates and 56.6% with a bachelor's degree or higher. The average temperature in Lyndhurst in the summer is 73 degrees, and in the winter 32 degrees.