Belle plaine is located in Sumner county Kansas with a geographic area of 0.8 square miles. The total population in Belle plaine is 1,473 with 47.3% male and 52.7% female. Children under age 5 represent 3.4% of the population, under age 18 equal 21.8% of the population and over age 65 is 19.7% of the population. The median household income is $58,977, per capita income is $29,348. There are a total of 663 housing units with 63.3% owner occupied. Education includes 31.5% of residents that are high school graduates and 15.7% with a bachelor's degree or higher. The average temperature in Belle plaine in the summer is 78 degrees, and in the winter 32 degrees.