How much do Chemical Plant and System Operators make in St. Louis, MO-IL?

Percentile spread

For Chemical Plant and System Operators, the published 10th percentile is $48,390 and the 90th percentile is $64,570. The difference is $16,180, which is 30.9% of the median. Ten percent of measured wages fall below the 10th percentile and ten percent fall above the 90th. How to read a percentile.

The middle half of the distribution, from the 25th percentile at $52,290 to the 75th at $58,430, covers $6,140.

The mean annual wage is $56,420, which sits above the median of $52,330. Median and mean measure different points in the same distribution.

National and state comparison

The St. Louis, MO-IL median is 33% lower than the national median of $78,120 for Chemical Plant and System Operators. In 2024 national prices the local median is $55,033, which is 29.6% lower than that same national median. The national figure is already in national prices because the United States parity is 100.

It is 5.7% lower than the Missouri median of $55,470.

St. Louis, MO-IL covers more than one state. The state comparison uses Missouri, the primary state on the BLS area record.

Price-adjusted pay

The 2024 all-items regional price parity for St. Louis, MO-IL is 95.088, with the United States at 100. The Bureau of Economic Analysis released those parities on February 19, 2026. Dividing the May 2025 median of $52,330 by that parity and multiplying by 100 puts Chemical Plant and System Operators at $55,033 in national prices. The wage year and the price year are different. Compare this wage after prices.

Nearby metros

No other metropolitan area within 200 miles has a published annual median for Chemical Plant and System Operators in the May 2025 tables. A wage from farther away is not filled in. When a wage is not published.

Employment share

Chemical Plant and System Operators accounts for 0.01% of wage-and-salary employment in St. Louis, MO-IL (190 of 1,341,320). Nationally the occupation is 0.01% of employment (16,610 of 155,495,730). The local share is 1.33 times the national share. That ratio is the location quotient computed from these May 2025 employment counts. It is not copied from the location-quotient column in the BLS bulk file.