Mid-level Data Scientist salary in St. Louis, MO
Based on 139 certified H-1B filings at DOL wage level II in the St. Louis, MO-IL metro area, FY2025–FY2026. Includes Maryland Heights, Chesterfield, O'fallon, Saint Louis, Clayton.
Also listed as: Machine Learning Scientist
Salary range
| Percentile | Salary |
|---|---|
| 10th | $75,962 |
| 25th | $77,932 |
| 50th (median) | $79,000 |
| 75th | $92,020 |
| 90th | $112,600 |
Salary by year
Median salary
Filings per year
Show as table
| Fiscal year | Median | P25 | P75 | Filings |
|---|---|---|---|---|
| FY2020 | $80,766 | $75,723 | $83,503 | 14 |
| FY2021 | $92,900 | $70,591 | $116,250 | 14 |
| FY2022 | $93,600 | $80,000 | $106,100 | 29 |
| FY2023 | $83,000 | $78,603 | $98,460 | 48 |
| FY2024 | $80,000 | $72,000 | $96,118 | 50 |
| FY2025 | $80,000 | $75,962 | $92,688 | 80 |
| FY2026 | $78,500 | $78,083 | $84,100 | 59 |
Cost of living
St. Louis's median mid-level Data Scientist salary of $79,000 is worth about $83,100 at national average prices.
Source: BEA Regional Price Parities, 2024 (U.S. = 100; St. Louis = 95.1).
Compared with all workers here
All Data Scientists in the St. Louis, MO area earned a median of $99,600 in May 2025 (2,640 employed). The H-1B median here is $79,000, 21% lower.
Source: U.S. Bureau of Labor Statistics, OEWS metropolitan area estimates. BLS wages include some incentive pay; H-1B figures are base salary.
Employers filing at this level
| Employer | Median | Filings |
|---|---|---|
| Mastercard | $115,000 | 10 |
| Crysalis Biosciences | too few | 4 |
| Endeavour Technologies | too few | 4 |
| Limelightlogic | too few | 4 |
| Schnuck Markets | too few | 4 |
| Washington University | too few | 3 |
| Americold Logistics | too few | 2 |
| Aspire Systems Digital Transformation | too few | 2 |
| Bayer CropScience | too few | 2 |
| Bayer Research and Development Services | 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 | $62,000 | 61 |
| Mid-level · Level II | $79,000 | 139 |
| Senior · Level III | $98,800 | 77 |
| Expert · Level IV | $125,000 | 79 |
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 |
|---|---|---|---|
| Entry-level · Level I | $58,178 | $62,000 | 61 |
| Mid-level · Level II | $75,962 | $79,000 | 139 |
| Senior · Level III | $98,446 | $98,800 | 77 |
| Expert · Level IV | $118,789 | $125,000 | 79 |
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.