4 Properties Found
Seneca is located in Illinois. Seneca, Illinois has a population of 2,262. Seneca is more family-centric than the surrounding county with 26% of the households containing married families with children. The county average for households married with children is 25%.
The median household income in Seneca, IL is $66,454. The median household income for the surrounding county is $52,517 compared to the national median of $57,525. The median age of people living in Seneca is 39 years old.Learn more about Seneca, IL Real Estate.