Cost of Living in Lake St. Louis, MO
Overall index: 117 (100 = US national average). Data source: US Census ACS 2023 & BLS OEWS 2025, 2025.
Overall Cost of Living Index
Cost Breakdown by Category
| Category | Index | vs US avg | Sample cost |
|---|---|---|---|
| Housing | 108 | +8% | $1,126 |
| Transportation | 102 | +2% | $3.50 |
| Food | 165 | +65% | $677 |
| Utilities | 104 | +4% | $194 |
| Healthcare | 104 | +4% | $140 |
Index 100 = US national average. Higher = more expensive.
Cost breakdown (visual)
Salary Calculator: What do you need to earn in Lake St. Louis?
A single adult living comfortably in Lake St. Louis, MO needs approximately $40,950 / year after taxes.
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Frequently Asked Questions
What is the cost of living in Lake St. Louis, MO?
The overall cost of living in Lake St. Louis, MO is 17% higher than the US national average (index: 117 where 100 = national average).
How much is rent in Lake St. Louis, MO?
Average rent for a 1-bedroom apartment in Lake St. Louis, MO is about $1,126/month.
Is Lake St. Louis, MO expensive to live in?
Yes, Lake St. Louis, MO is considered expensive (index above national average).
What salary do I need to live in Lake St. Louis, MO?
A single adult needs roughly $40,950/year to cover basic living costs in Lake St. Louis, MO.