Gilman is located in Marshall county Iowa with a geographic area of 0.5 square miles. The total population in Gilman is 543 with 43.1% male and 56.9% female. Children under age 5 represent 2.6% of the population, under age 18 equal 23.6% of the population and over age 65 is 22.3% of the population. The median household income is $84,327, per capita income is $34,845. There are a total of 263 housing units with 80.2% owner occupied. Education includes 50.6% of residents that are high school graduates and 10.3% with a bachelor's degree or higher. The average temperature in Gilman in the summer is 72 degrees, and in the winter 23 degrees.
