Gladstone is located in Henderson county Illinois with a geographic area of 0.4 square miles. The total population in Gladstone is 145 with 44.8% male and 55.2% female. Children under age 5 represent 5.5% of the population, under age 18 equal 11.0% of the population and over age 65 is 35.2% of the population. The median household income is $30,250, per capita income is $26,854. There are a total of 95 housing units with 70.5% owner occupied. Education includes 48.4% of residents that are high school graduates and 5.3% with a bachelor's degree or higher. The average temperature in Gladstone in the summer is 74 degrees, and in the winter 27 degrees.