Kirk is located in Yuma county Colorado with a geographic area of 4.1 square miles. The total population in Kirk is 81 with 54.3% male and 45.7% female. Children under age 5 represent 4.9% of the population, under age 18 equal 7.4% of the population and over age 65 is 54.3% of the population. The median household income is $50,938, per capita income is $30,285. There are a total of 53 housing units with 96.2% owner occupied. Education includes 50.9% of residents that are high school graduates and 28.3% with a bachelor's degree or higher. The average temperature in Kirk in the summer is 68 degrees, and in the winter 29 degrees.