How does Private Detectives and Investigators salary grow from entry-level to senior in Illinois? State salary progression based on 2024 BLS data.
134% career growth potentialData: BLS OEWS 2024 • Illinois salary data • Updated 2026-04-06
The salary range for Private Detectives and Investigators in Illinois spans from $39,750 at entry-level to $93,100 at senior level — a difference of $53,350 per year.
Senior Private Detectives and Investigatorss in Illinois earn $53,350 more per year than entry-level professionals.
Complete percentile breakdown showing how Private Detectives and Investigators salary increases with experience in Illinois, from entry-level (10th percentile) to senior (90th percentile).
| Experience Level | Percentile | Annual Salary | Monthly | Hourly |
|---|---|---|---|---|
| Entry-Level | P10 | $39,750 | $3,312 | $19.11 |
| Early Career | P25 | $46,970 | $3,914 | $22.58 |
| Mid-Career | Median | $60,940 | $5,078 | $29.30 |
| Experienced | P75 | $82,980 | $6,915 | $39.89 |
| Senior / Expert | P90 | $93,100 | $7,758 | $44.76 |
Private Detectives and Investigators in Illinois shows strong salary progression over a career. Entry-level professionals start around $39,750, while senior-level professionals earn $93,100 — a 134% increase. The biggest salary jump typically occurs between mid-career ($60,940) and experienced level ($82,980), suggesting that specialization and leadership responsibilities are the key drivers of higher pay.
Where does Illinois rank for Private Detectives and Investigators senior-level salaries? Compare Illinois's P90 pay to other top-paying states.
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Entry-level Private Detectives and Investigatorss (10th percentile) earn approximately $39,750 per year, or $3,312 per month. Early-career professionals (25th percentile) earn around $46,970. Based on 2024 BLS OEWS data across all U.S. states.
Senior Private Detectives and Investigatorss (90th percentile) earn approximately $93,100 per year. Experienced professionals (75th percentile) earn around $82,980. This represents a career premium of 134% over entry-level pay.
The career salary growth potential for Private Detectives and Investigatorss is 134%. Entry-level professionals start at $39,750, while senior-level can earn up to $93,100 — a difference of $53,350 per year.
The highest-paying state for senior Private Detectives and Investigatorss is Illinois, where 90th-percentile salaries reach $93,100 per year. See the full state-by-state comparison above.
We use BLS Occupational Employment and Wage Statistics (OEWS) 2024 data. The 10th percentile (P10) approximates entry-level pay — the salary that 90% of workers earn more than. The 90th percentile (P90) approximates senior/expert-level pay — only 10% of workers earn above this threshold. National averages are computed across all reporting U.S. states.
Salary percentile data for Illinois from the U.S. Bureau of Labor Statistics (BLS) Occupational Employment and Wage Statistics (OEWS), May 2024. P10 approximates entry-level compensation; P90 approximates senior/expert-level compensation. State averages differ from national averages due to regional variations in cost of living, demand, and workforce composition. Actual salaries vary based on employer, experience, education, certifications, and specific location within Illinois.
Our Methodology · Data Sources · Source: BLS OEWS