Putnam is located in Illinois. Putnam, Illinois has a population of 680. Putnam is less family-centric than the surrounding county with 8% households with children. The county percentage for households with children is 22%.
The median household income in Putnam, Illinois is $68,099. The median household income for the surrounding county is $65,000 compared to the national median of $66,222. The median age of people living in Putnam is 57.1 years.
The average high temperature in July is 86.13 degrees, with an average low temperature in January of 13.27 degrees. The annual precipitation is 35.28.