Cost of living in Arnold, MO

Arnold is a Census city in Jefferson County, MO. ACS 2024 5-year population is 20,956. Median gross rent is $1,112 (ACS 2024 5-year, this place). Median home value is $220,000. Median household income is $78,370. Insurance is the NAIC state average; food is a USDA plan — no town indexes.