Seneca is located in Illinois.
Seneca, Illinois has a population of
2,223.
Seneca is
more
family-centric than the surrounding county with
32% households with children.
The county percentage for households with children is 26%.
The median household income in Seneca, Illinois is
$77,381.
The median household income for the surrounding county is $59,610
compared to the national median of $66,222.
The median age of people living in Seneca is
38.7 years.
Seneca Weather
The average high temperature in July is 85.39
degrees, with an average low temperature in January of 12.6 degrees.
The annual precipitation is
37.01.