The median annual wage for Private Detectives and Investigators in St. Louis, MO-IL is $44,510 (May 2024 BLS OES). The mean (average) is $53,210.
Pay spans roughly $38,050 at the 10th percentile to $73,950 at the 90th, so experience and specialisation move this figure a lot. At the median that is about $21.40 per hour. An estimated 180 people work as private detectives and investigators in St. Louis, MO-IL.
| Median (annual) | $44,510 |
| Mean (annual) | $53,210 |
| Median (hourly) | $21.40 |
| 10th percentile | $38,050 |
| 90th percentile | $73,950 |
| Employment | 180 |
Updated 2026-07-23.
Source: BLS OES May 2024 — bls.gov/oes. Checked 2026-07-23.