Keystone is located in Iowa. Keystone, Iowa has a population of 658. Keystone is more family-centric than the surrounding county with 33.74% of the households containing married families with children. The county average for households married with children is 31.22%.
The median household income in Keystone, Iowa is $60,972. The median household income for the surrounding county is $72,334 compared to the national median of $69,021. The median age of people living in Keystone is 38.8 years.
The average high temperature in July is 83.8 degrees, with an average low temperature in January of 9.9 degrees. The average rainfall is approximately 37.4 inches per year, with 31.2 inches of snow per year.
