Cost of living in Seneca, IL

Seneca is a Census village in Grundy County, IL. ACS 2024 5-year population is 2,450. Median gross rent is $1,149 (ACS 2024 5-year, this place). Median home value is $227,500. Median household income is $86,830. Insurance is the NAIC state average; food is a USDA plan — no town indexes.