Waterloo is located in Illinois. Waterloo, Illinois 62298 has population of 10,417. Waterloo 62298 is less family-centric than the surrounding county with 29% of the households with children.
The median household income in Waterloo, Illinois 62298 is $69,689. The median household income for the surrounding county is $85,717 compared to the national median of $66,222. The median age of people living in Waterloo 62298 is 42 years.
The average high temperature in July is 88.5 degrees, with an average low temperature in January of 20.3 degrees. The annual precipitation is 42.11.