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Seneca Real Estate
Seneca is located in Illinois. Seneca, Illinois has a population of 2,269. Seneca is more family-centric than the surrounding county with 29% households with children. The county percentage for households with children is 25%.
The median household income in Seneca, Illinois is $55,831. The median household income for the surrounding county is $45,044 compared to the national median of $49,877. The median age of people living in Seneca is 39 years.
The average high temperature in July is 84.82 degrees, with an average low temperature in January of 12.96 degrees. The annual precipitation is 37.55.
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