Walnut is located in Iowa. Walnut, Iowa 51577has a population of 686. Walnut 51577 is less family-centric than the surrounding county with 18.29% of the households containing married families with children. The county average for households married with children is 25.85%.
The median household income in Walnut, Iowa 51577 is $50,938. The median household income for the surrounding county is $63,840 compared to the national median of $69,021. The median age of people living in Walnut 51577 is 51.2 years.
The average high temperature in July is 84.8 degrees, with an average low temperature in January of 10.6 degrees. The average rainfall is approximately 35.2 inches per year, with 28.5 inches of snow per year.