Port byron is located in Rock island county Illinois with a geographic area of 2.4 square miles. The total population in Port byron is 2,028 with 51.7% male and 48.3% female. Children under age 5 represent 5.6% of the population, under age 18 equal 26.9% of the population and over age 65 is 14.5% of the population. The median household income is $81,618, per capita income is $38,387. There are a total of 780 housing units with 81.8% owner occupied. Education includes 21.9% of residents that are high school graduates and 37.1% with a bachelor's degree or higher. The average temperature in Port byron in the summer is 74 degrees, and in the winter 27 degrees.