As of August 01, 2026, the average annual salary for Police Detective in Illinois is $35,077, equivalent to $17 per hour, $675 weekly, or $2,923 monthly. These figures, sourced from Salary.com’s real-time job posting scans, highlight competitive earning potential for Police Detective in cities like San Jose, Santa Clara, and San Francisco.
Annually Salaries for Police Detective in Illinois vary widely, spanning from $32,513 to $40,229. Most professionals fall between the 25th percentile ($33,735) and 75th percentile ($37,774), while top earners (90th percentile) make $40,229 per year. This $4,039 pay gap underscores opportunities for salary growth through certifications, specialized skills like Communication Skills or Asset Management, or targeting high-paying regions like District of Columbia or California.
Location and experience significantly influence earnings. For example, Illinois Police Detective often earn 1.9% higher than national averages due to demand from Fortune 75 companies. However, Illinois currently ranks 14 nationwide for Police Detective job salary. Professionals are advised to focus on high-growth sectors like Media to offset market challenges.
