Allenspark is located in Boulder county Colorado with a geographic area of 11.9 square miles. The total population in Allenspark is 464 with 50.0% male and 50.0% female. Children under age 5 represent 0.2% of the population, under age 18 equal 19.8% of the population and over age 65 is 26.5% of the population. The median household income is $113,250, per capita income is $47,928. There are a total of 203 housing units with 85.7% owner occupied. Education includes 15.3% of residents that are high school graduates and 62.1% with a bachelor's degree or higher. The average temperature in Allenspark in the summer is 68 degrees, and in the winter 29 degrees.