Alma is located in Marion county Illinois with a geographic area of 1.1 square miles. The total population in Alma is 296 with 46.6% male and 53.4% female. Children under age 5 represent 11.5% of the population, under age 18 equal 24.3% of the population and over age 65 is 20.6% of the population. The median household income is $36,250, per capita income is $21,977. There are a total of 145 housing units with 66.9% owner occupied. Education includes 35.9% of residents that are high school graduates and 5.5% with a bachelor's degree or higher. The average temperature in Alma in the summer is 74 degrees, and in the winter 27 degrees.