How much does a Mechanical Principal Engineer make in Oklahoma?
As of August 01, 2026, the average salary for a Mechanical Principal Engineer in Oklahoma is $137,715 per year, which breaks down to an hourly rate of $66.
However, a Mechanical Principal Engineer's salary can vary significantly. Here’s a look at the typical salary range:
- Top Earners (90th percentile): $150,931
- Majority Range (25th-75th percentile): $130,958 to $144,632
- Entry-Level (10th percentile): $124,806