Cost of living in Alton, IL

Alton is a Census city in Madison County, IL. ACS 2024 5-year population is 25,279. Median gross rent is $1,015 (ACS 2024 5-year, this place). Median home value is $103,700. Median household income is $54,568. Insurance is the NAIC state average; food is a USDA plan — no town indexes.