Collyer is located in Trego county Kansas with a geographic area of 0.2 square miles. The total population in Collyer is 80 with 52.5% male and 47.5% female. Children under age 5 represent 5.0% of the population, under age 18 equal 15.0% of the population and over age 65 is 22.5% of the population. The median household income is $43,750, per capita income is $27,151. There are a total of 34 housing units with 100.0% owner occupied. Education includes 29.4% of residents that are high school graduates and 11.8% with a bachelor's degree or higher. The average temperature in Collyer in the summer is 78 degrees, and in the winter 32 degrees.