Grafton is located in Iowa. Grafton, Iowa has a population of 300. Grafton is more family-centric than the surrounding county with 27.54% of the households containing married families with children. The county average for households married with children is 27.23%.
The median household income in Grafton, Iowa is $32,917. The median household income for the surrounding county is $50,880 compared to the national median of $57,652. The median age of people living in Grafton is 33.1 years.
The average high temperature in July is 80.7 degrees, with an average low temperature in January of 5 degrees. The average rainfall is approximately 34.9 inches per year, with 38.7 inches of snow per year.