As of July 01, 2026, the average annual salary for Research Biologist in Illinois is $57,210, equivalent to $28 per hour, $1,100 weekly, or $4,768 monthly. These figures, sourced from Salary.com’s real-time job posting scans, highlight competitive earning potential for Research Biologist in cities like San Jose, Santa Clara, and San Francisco.
Annually Salaries for Research Biologist in Illinois vary widely, spanning from $45,092 to $67,067. Most professionals fall between the 25th percentile ($50,867) and 75th percentile ($62,370), while top earners (90th percentile) make $67,067 per year. This $11,503 pay gap underscores opportunities for salary growth through certifications, specialized skills like Analysis or Microbiology, or targeting high-paying regions like District of Columbia or California.
Location and experience significantly influence earnings. For example, Illinois Research Biologist often earn 1.9% higher than national averages due to demand from Fortune 64 companies. However, Illinois currently ranks 14 nationwide for Research Biologist job salary. Professionals are advised to focus on high-growth sectors like to offset market challenges.
