Cromwell is located in Carlton county Minnesota with a geographic area of 1.8 square miles. The total population in Cromwell is 359 with 47.1% male and 52.9% female. Children under age 5 represent 21.7% of the population, under age 18 equal 32.9% of the population and over age 65 is 20.6% of the population. The median household income is $58,750, per capita income is $18,991. There are a total of 121 housing units with 62.0% owner occupied. Education includes 39.7% of residents that are high school graduates and 9.9% with a bachelor's degree or higher. The average temperature in Cromwell in the summer is 64 degrees, and in the winter 9 degrees.