Jefferson is located in Iowa. Jefferson, Iowa has a population of 4,178. Jefferson is less family-centric than the surrounding county with 22.81% of the households containing married families with children. The county average for households married with children is 24.69%.
The median household income in Jefferson, Iowa is $45,230. The median household income for the surrounding county is $52,768 compared to the national median of $69,021. The median age of people living in Jefferson is 47.7 years.
The average high temperature in July is 84.9 degrees, with an average low temperature in January of 10.1 degrees. The average rainfall is approximately 34.7 inches per year, with 27.1 inches of snow per year.
