How much does a Principal Process Engineer make in Montana?
As of May 01, 2026, the average salary for a Principal Process Engineer in Montana is $130,004 per year, which breaks down to an hourly rate of $63.
However, a Principal Process Engineer's salary can vary significantly. Here’s a look at the typical salary range:
- Top Earners (90th percentile): $146,668
- Majority Range (25th-75th percentile): $119,035 to $138,727
- Entry-Level (10th percentile): $109,048