Sumner is located in Iowa. Sumner, Iowa has a population of 2,149. Sumner is less family-centric than the surrounding county with 27.56% of the households containing married families with children. The county average for households married with children is 31.71%.
The median household income in Sumner, Iowa is $49,353. The median household income for the surrounding county is $76,782 compared to the national median of $69,021. The median age of people living in Sumner is 45.4 years.
The average high temperature in July is 82.4 degrees, with an average low temperature in January of 7 degrees. The average rainfall is approximately 36.3 inches per year, with 35.5 inches of snow per year.
