The population of Robinson City, Illinois is spread out in almost all age groups. The youngest residents were under the age of eighteen, while the oldest were sixty-five years old or older. Fifty-three percent of the population was under the age of twenty-four, while forty-nine percent of the population was aged between twenty-four and forty-four years. There were also approximately twenty-four single adults and nineteen seniors living alone. In terms of gender, the population of Robinson City was more male than female.