Sumner is located in Iowa. Sumner, Iowa has a population of 2,153. Sumner is less family-centric than the surrounding county with 30.25% of the households containing married families with children. The county average for households married with children is 32.05%.
The median household income in Sumner, Iowa is $56,420. The median household income for the surrounding county is $65,440 compared to the national median of $57,652. The median age of people living in Sumner is 44.3 years.
The average high temperature in July is 82.7 degrees, with an average low temperature in January of 7.1 degrees. The average rainfall is approximately 36.6 inches per year, with 33 inches of snow per year.
