Keystone is located in Iowa. Keystone, Iowa has a population of 634. Keystone is more family-centric than the surrounding county with 37.65% of the households containing married families with children. The county average for households married with children is 34.5%.
The median household income in Keystone, Iowa is $64,375. The median household income for the surrounding county is $64,061 compared to the national median of $57,652. The median age of people living in Keystone is 45.4 years.
The average high temperature in July is 84 degrees, with an average low temperature in January of 9.1 degrees. The average rainfall is approximately 36.2 inches per year, with 28.5 inches of snow per year.
