Cost of living in St. John, MO

St. John is a Census city in St. Louis County, MO. ACS 2024 5-year population is 6,527. Median gross rent is $1,159 (ACS 2024 5-year, this place). Median home value is $106,300. Median household income is $53,755. Insurance is the NAIC state average; food is a USDA plan — no town indexes.