How Much Do First-Line Supervisors of Police and Detectives Make in Illinois?
Median wage from BLS May 2025 — and the after-tax number the salary sites skip. Tax year 2026.
Quick answer
According to payandtaxes.com's analysis of BLS May 2025 data and 2026 tax law, the median First-Line Supervisors of Police and Detectives in Illinois earns $135,080 per year and takes home $97,052 ($8,088/month) — a keep-rate of 71.8%, with 4,900 employed in the state.
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| Gross pay | $11,256.67 |
| Federal income tax | $1,762.76 |
| Social Security | $697.91 |
| Medicare | $163.22 |
| Illinois state income tax | $545.14 |
| You keep | $8,087.64 |
How much do First-Line Supervisors of Police and Detectives make in Illinois?
The median First-Line Supervisors of Police and Detectives in Illinois earns $135,080 per year (BLS May 2025), about $64.94 per hour.
What is that after taxes?
$135,080 gross in Illinois keeps $97,052 after federal income tax ($21,153), FICA ($10,334) and state income tax ($6,542) — $8,088 per month, a 71.8% keep-rate.
How does Illinois compare to the national median for First-Line Supervisors of Police and Detectives?
The Illinois median is $29,040 above the national median of $106,040.
Which state pays First-Line Supervisors of Police and Detectives the most?
California has the highest median gross for First-Line Supervisors of Police and Detectives at $163,960 — but compare take-home, not gross: state taxes change the order.
First-Line Supervisors of Police and Detectives salary in every state · Illinois paycheck calculator · Illinois minimum wage