Mechanical Engineer salary in St. Louis, MO
Based on 51 certified H-1B filings in the St. Louis, MO-IL metro area, FY2025–FY2026. Includes St Louis, St. Charles, Washington, Edwardsville, Saint Louis.
Also listed as: Mechanical Design Engineer
Salary range
| Percentile | Salary |
|---|---|
| 10th | $77,000 |
| 25th | $80,184 |
| 50th (median) | $91,000 |
| 75th | $98,737 |
| 90th | $110,000 |
Salary by year
Median salary
Filings per year
Show as table
| Fiscal year | Median | P25 | P75 | Filings |
|---|---|---|---|---|
| FY2020 | $77,022 | $62,464 | $77,267 | 32 |
| FY2021 | $76,315 | $64,499 | $81,237 | 24 |
| FY2022 | $78,374 | $66,764 | $82,514 | 22 |
| FY2023 | $80,679 | $79,359 | $95,451 | 28 |
| FY2024 | $92,000 | $72,000 | $115,253 | 29 |
| FY2025 | $86,900 | $80,184 | $95,680 | 30 |
| FY2026 | $93,371 | $80,000 | $107,245 | 21 |
Cost of living
St. Louis's median Mechanical Engineer salary of $91,000 is worth about $95,700 at national average prices.
Source: BEA Regional Price Parities, 2024 (U.S. = 100; St. Louis = 95.1).
Compared with all workers here
All Mechanical Engineers in the St. Louis, MO area earned a median of $100,340 in May 2025 (2,190 employed). The H-1B median here is $91,000, 9% lower.
Source: U.S. Bureau of Labor Statistics, OEWS metropolitan area estimates. BLS wages include some incentive pay; H-1B figures are base salary.
Top employers filing
| Employer | Median | Filings |
|---|---|---|
| L&T Technology Services | too few | 7 |
| Optimum Engineering Solutions | too few | 4 |
| WEG Transformers | too few | 3 |
| Abbott Machine | too few | 2 |
| Carl Zeiss Meditec | too few | 2 |
| Diode Dynamics | too few | 2 |
| Gillespie & Powers | too few | 2 |
| Nidec Motor | too few | 2 |
Employers with at least 2 filings here. Median shown at 10+ filings.
By experience level
| Wage level | Median | Filings |
|---|---|---|
| Entry-level · Level I | too few | 3 |
| Mid-level · Level II | $82,100 | 24 |
| Senior · Level III | $94,775 | 12 |
| Expert · Level IV | – | 0 |
Median shown when a level has at least 10 filings.
Minimum H-1B salary by level
| Wage level | Prevailing wage (most common) | Median offered salary | Filings |
|---|---|---|---|
| Mid-level · Level II | $80,184 | $82,100 | 24 |
| Senior · Level III | $93,371 | $94,775 | 12 |
The prevailing wage is the minimum an employer must pay for this job and area. Amounts vary by county within a metro and by wage source.