Mechanical Engineer Salary in St. Louis, MO (2026)
Based on Bureau of Labor Statistics occupational wage data adjusted for St. Louis cost of living. Last updated .
Median Annual Salary
$85,000
St. Louis, Missouri
Entry Level (10th pct.)
$54,000
0â2 years experience
25th Percentile
$67,000
Below average earner
Median (50th pct.)
$85,000
Typical earner
75th Percentile
$105,000
Above average earner
Top Earner (90th pct.)
$127,000
5+ years experience
Mechanical Engineer Salary Breakdown â St. Louis, MO
The table below shows how Mechanical Engineer salaries in St. Louis distribute across experience levels and pay percentiles in 2026.
| Percentile | Annual Salary | Monthly | Hourly (est.) | Profile |
|---|---|---|---|---|
| 10th | $54,000 | $4,500 | $26 | Entry-level, new graduate |
| 25th | $67,000 | $5,583 | $32 | 1â3 years experience |
| Median | $85,000 | $7,083 | $41 | Mid-career professional |
| 75th | $105,000 | $8,750 | $50 | Experienced professional |
| 90th | $127,000 | $10,583 | $61 | Senior / specialist |
Source: U.S. Bureau of Labor Statistics Occupational Employment and Wage Statistics (OEWS), adjusted for St. Louis regional cost of living. Data as of 2026.
Visual Salary Distribution
What Affects Mechanical Engineer Salaries in St. Louis?
- Experience: Entry-level professionals earn significantly less than their senior counterparts. In St. Louis, the gap between the 10th and 90th percentile is $73,000.
- Industry:Mechanical Engineers working in high-demand industries such as technology, finance, and healthcare often command salaries above the median.
- Education & Certifications: Advanced degrees and relevant professional certifications can move your salary into the upper quartile.
- Company size: Larger organizations typically offer higher compensation packages, including bonuses and equity.
- Location within St. Louis: Employers in downtown/central business districts or tech corridors often pay more than suburban offices.
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