As of July 01, 2026, the average annual salary for Diesel Engineer in Illinois is $120,913, equivalent to $58 per hour, $2,325 weekly, or $10,076 monthly. These figures, sourced from Salary.com’s real-time job posting scans, highlight competitive earning potential for Diesel Engineer in cities like San Jose, Santa Clara, and San Francisco.
Annually Salaries for Diesel Engineer in Illinois vary widely, spanning from $96,601 to $137,618. Most professionals fall between the 25th percentile ($108,187) and 75th percentile ($129,657), while top earners (90th percentile) make $137,618 per year. This $21,470 pay gap underscores opportunities for salary growth through certifications, specialized skills like Analysis or FOCUS, or targeting high-paying regions like District of Columbia or California.
Location and experience significantly influence earnings. For example, Illinois Diesel Engineer often earn 1.9% higher than national averages due to demand from Fortune 31 companies. However, Illinois currently ranks 14 nationwide for Diesel Engineer job salary. Professionals are advised to focus on high-growth sectors like to offset market challenges.
