What does a First-Line Supervisors of Security Workers salary really buy you in Illinois?
Illinois is near the US average cost of livingData: BLS OEWS 2024 + BEA Regional Price Parities 2022 • Updated 2026-03-31
Illinois's Regional Price Parity (RPP) is 101.3, meaning prices are 1.3% higher the national average. A First-Line Supervisors of Security Workers earning $57,570 in Illinois has the equivalent purchasing power of $56,831 in an average-cost US state.
Every dollar goes further in low-cost states. Here is how each salary percentile compares after adjusting for Illinois's cost of living.
| Percentile | Nominal Salary | COL-Adjusted | Difference |
|---|---|---|---|
| 10th Percentile (P10) | $38,240 | $37,749 | $-490 |
| 25th Percentile (P25) | $45,490 | $44,906 | $-583 |
| Median (P50) | $57,570 | $56,831 | $-738 |
| 75th Percentile (P75) | $72,330 | $71,401 | $-928 |
| 90th Percentile (P90) | $94,940 | $93,721 | $-1,218 |
Illinois's cost of living is close to the national average, so $57,570 keeps most of its value at $56,831 in real terms. Location choice here is more about career opportunities than cost arbitrage.
Where does First-Line Supervisors of Security Workers salary stretch the furthest? Top 10 states ranked by COL-adjusted median salary.
Illinois ranks #28 out of 50 states for First-Line Supervisors of Security Workers after cost-of-living adjustment.
Some links are affiliate links. See our disclosure.
A First-Line Supervisors of Security Workers in Illinois earns a median salary of $57,570 per year. After adjusting for Illinois's cost of living (RPP=101.3), the real purchasing power is $56,831 — a -1.3% difference.
Illinois's cost of living is 1.3% higher than the national average according to the BEA Regional Price Parities (2022). The RPP index for Illinois is 101.3 (US average = 100).
Regional Price Parities (RPPs) are price indexes published by the U.S. Bureau of Economic Analysis (BEA) that measure differences in price levels across states. They are expressed as a percentage of the national average (US = 100). Higher RPP means higher cost of living.
The adjusted salary is calculated as: Nominal Salary x (100 / RPP). For a First-Line Supervisors of Security Workers in Illinois: $57,570 x (100 / 101.3) = $56,831. This represents what the salary would be worth in a state with average living costs.