Putnam is located in Illinois. Putnam, Illinois has a population of 529. Putnam is less family-centric than the surrounding county with 5.58% of the households containing married families with children. The county average for households married with children is 25.46%.
The median household income in Putnam, Illinois is $76,875. The median household income for the surrounding county is $67,419 compared to the national median of $69,021. The median age of people living in Putnam is 63.8 years.
The average high temperature in July is 86.3 degrees, with an average low temperature in January of 15.9 degrees. The average rainfall is approximately 39 inches per year, with 21.3 inches of snow per year.