The median annual wage for Petroleum Pump System Operators, Refinery Operators, and Gaugers in Maryland is $81,750 (May 2024 BLS OES). The mean (average) is $80,850.
Pay spans roughly $46,800 at the 10th percentile to $97,690 at the 90th, so experience and specialisation move this figure a lot. At the median that is about $39.30 per hour. An estimated 130 people work as petroleum pump system operators, refinery operators, and gaugers in Maryland.
| Median (annual) | $81,750 |
| Mean (annual) | $80,850 |
| Median (hourly) | $39.30 |
| 10th percentile | $46,800 |
| 90th percentile | $97,690 |
| Employment | 130 |
Updated 2026-07-23.
Source: BLS OES May 2024 — bls.gov/oes. Checked 2026-07-23.