Lisbon is located in Linn county Iowa with a geographic area of 2.1 square miles. The total population in Lisbon is 2,138 with 46.8% male and 53.2% female. Children under age 5 represent 5.5% of the population, under age 18 equal 23.4% of the population and over age 65 is 14.5% of the population. The median household income is $77,475, per capita income is $34,930. There are a total of 813 housing units with 76.0% owner occupied. Education includes 33.6% of residents that are high school graduates and 22.1% with a bachelor's degree or higher. The average temperature in Lisbon in the summer is 73 degrees, and in the winter 23 degrees.