Seneca is located in Illinois.
Seneca, Illinois has a population of
family-centric than the surrounding county with
35.58% of the households
containing married families with children.
The county average for households married with children is 30.9%.
The median household income in Seneca, Illinois is
The median household income for the surrounding county is $52,356
compared to the national median of $53,046.
The median age of people living in Seneca is
The average high temperature in July is 85
degrees, with an average low temperature in January of 13.3 degrees.
The average rainfall is approximately 35.3 inches
per year, with 24.1 inches of snow per year.