How Much Do First-Line Supervisors of Correctional Officers 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 Correctional Officers in Illinois earns $105,450 per year and takes home $77,939 ($6,495/month) — a keep-rate of 73.9%, with 2,860 employed in the state.
Free. No signup. Single filer, standard deduction — full model.
| Gross pay | $8,787.50 |
| Federal income tax | $1,197.41 |
| Social Security | $544.83 |
| Medicare | $127.42 |
| Illinois state income tax | $422.92 |
| You keep | $6,494.93 |
How much do First-Line Supervisors of Correctional Officers make in Illinois?
The median First-Line Supervisors of Correctional Officers in Illinois earns $105,450 per year (BLS May 2025), about $50.70 per hour.
What is that after taxes?
$105,450 gross in Illinois keeps $77,939 after federal income tax ($14,369), FICA ($8,067) and state income tax ($5,075) — $6,495 per month, a 73.9% keep-rate.
How does Illinois compare to the national median for First-Line Supervisors of Correctional Officers?
The Illinois median is $27,480 above the national median of $77,970.
Which state pays First-Line Supervisors of Correctional Officers the most?
California has the highest median gross for First-Line Supervisors of Correctional Officers at $131,210 — but compare take-home, not gross: state taxes change the order.
First-Line Supervisors of Correctional Officers salary in every state · Illinois paycheck calculator · Illinois minimum wage