As of February 01, 2026, the average annual salary for plastics engineering in Illinois is $98,280, equivalent to $47 per hour, $1,890 weekly, or $8,190 monthly. These figures, sourced from Salary.com’s real-time job posting scans, highlight competitive earning potential for plastics engineering in cities like Santa Clara, San Jose, and Fremont.
Annually Salaries for plastics engineering in Illinois vary widely, spanning from $85,078 to $114,720. Most professionals fall between the 25th percentile ($91,370) and 75th percentile ($106,885), while top earners (90th percentile) make $114,720 per year. This $15,515 pay gap underscores opportunities for salary growth through certifications, specialized skills like Analysis or Design Engineering, or targeting high-paying regions like District of Columbia or California.
Location and experience significantly influence earnings. For example, Illinois plastics engineering often earn 1.9% higher than national averages due to demand from Fortune 58 companies. However, Illinois currently ranks 14 nationwide for plastics engineering job salary. Professionals are advised to focus on high-growth sectors like to offset market challenges.
