Cost of Living in St. Peters
St. Peters' cost of living runs genuinely favorable on income relative to housing cost, with a real, modest property-tax premium worth budgeting for.
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Learn moreA strong income-to-housing ratio
St. Peters' median household income ($88,708) runs roughly 40% above the Missouri statewide average, against a mid-priced $327,776 average home value.
A modest property-tax premium
St. Charles County's 1.26% median effective property tax rate runs above both the national (1.02%) and Missouri statewide (1.25%) medians -- a real, disclosed factor.
Missouri's newly flat state income tax
Missouri's real, flat 4.0% state income tax (effective January 1, 2026) applies statewide, including in St. Peters.
Key takeaways
- St. Peters' median household income runs roughly 40% above the Missouri statewide average.
- St. Charles County's 1.26% effective property tax rate runs above both national and Missouri statewide medians.
- Missouri's flat 4.0% state income tax applies statewide, including in St. Peters.
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