Blencoe is located in Monona county Iowa with a geographic area of 0.8 square miles. The total population in Blencoe is 238 with 47.9% male and 52.1% female. Children under age 5 represent 8.8% of the population, under age 18 equal 21.4% of the population and over age 65 is 37.4% of the population. The median household income is $66,875, per capita income is $30,666. There are a total of 109 housing units with 88.1% owner occupied. Education includes 39.4% of residents that are high school graduates and 16.5% with a bachelor's degree or higher. The average temperature in Blencoe in the summer is 73 degrees, and in the winter 23 degrees.