Salary guide, May 2025
Lead Mechanical Assembler pay in Chicago-Naperville-Elgin, IL-IN
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The median annual wage for Engine and Other Machine Assemblers in Chicago-Naperville-Elgin, IL-IN was $49,630 (U.S. Bureau of Labor Statistics, OEWS, May 2025). The middle half of workers earned between $40,950 and $49,630.
The Chicago-Naperville-Elgin, IL-IN median is $4,080 below the national median of $53,710, both from BLS May 2025.
Broader occupation · SOC 51-2031 Engine and Other Machine Assemblers
Lead Mechanical Assembler is shown within the broader published occupation. BLS does not separate this plant-specific title, seniority, shift, process or credential. Compare the duties with the SOC definition before using the range.
What should you know about chicago-Naperville-Elgin, IL-IN?
| 10th | 25th | Median | 75th | 90th |
|---|---|---|---|---|
| $39,480 | $40,950 | $49,630 | $49,630 | $61,830 |
| 10th | 25th | Median | 75th | 90th |
|---|---|---|---|---|
| $18.98 | $19.69 | $23.86 | $23.86 | $29.72 |
BLS estimated 540 workers employed in this occupation in Chicago-Naperville-Elgin, IL-IN. Location quotient: 0.55.
What should you know about united States?
| 10th | 25th | Median | 75th | 90th |
|---|---|---|---|---|
| $38,500 | $45,230 | $53,710 | $74,920 | $77,750 |
| 10th | 25th | Median | 75th | 90th |
|---|---|---|---|---|
| $18.51 | $21.75 | $25.82 | $36.02 | $37.38 |
What should you know about role pay against all occupations here?
The published Lead Mechanical Assembler median is $49,630. The all-occupations median in Chicago-Naperville-Elgin, IL-IN is $54,720. Ratio: 0.91 (role median divided by all-occupations median, same units, BLS May 2025). Location quotient 0.55 measures how concentrated this occupation's employment is here against the nation. It is not a wage index.
What should you know about two BLS releases?
| Release period | 25th | Median | 75th |
|---|---|---|---|
| May 2024 | $39,380 | $47,680 | $47,680 |
| May 2025 | $40,950 | $49,630 | $49,630 |
These are two separate BLS estimates from different survey panels. The workers and employers behind them differ, so the gap is not like-for-like pay for the same workers and is not a growth rate. We show no percentage change.
Source: U.S. Bureau of Labor Statistics, Occupational Employment and Wage Statistics, May 2025. SOC 51-2031 Engine and Other Machine Assemblers, Chicago-Naperville-Elgin, IL-IN. Official occupation data · Official area tables. Released 2026-05-15.
Source: U.S. Bureau of Labor Statistics, Occupational Employment and Wage Statistics, May 2025. SOC 51-2031 Engine and Other Machine Assemblers, U.S.. Official occupation data · Official area tables. Released 2026-05-15.
What should you know about nearby areas?
| Area | Median | 25th to 75th |
|---|---|---|
| Milwaukee-Waukesha, WI | $47,620 | $39,250 to $59,400 |
| Muskegon-Norton Shores, MI | $40,360 | $33,670 to $47,190 |
National page · Lead Mechanical Assembler ranked across metros