Walnut is located in Iowa. Walnut, Iowa 51577has a population of 673. Walnut 51577 is more family-centric than the surrounding county with 28.44% of the households containing married families with children. The county average for households married with children is 27.41%.
The median household income in Walnut, Iowa 51577 is $46,250. The median household income for the surrounding county is $56,291 compared to the national median of $57,652. The median age of people living in Walnut 51577 is 54.4 years.
The average high temperature in July is 85.9 degrees, with an average low temperature in January of 9.7 degrees. The average rainfall is approximately 34.8 inches per year, with 26.6 inches of snow per year.