Wages vary according to the clerk's length of employment. The Postal Service provides regular pay increases.
Postal clerks are classified as casual, part-time flexible, part-time regular, or full-time workers. Casual employees are hired for 90 days at a time to help process mail during busy times. Part-time flexible workers are called in when they are needed. Part-time regulars have a set work week of fewer than 40 hours. Full-time employees work a 40-hour week with a regular schedule.
Full-time postal clerks receive benefits similar to other federal government employees. These include vacation and sick leave, health insurance, and a retirement plan.
                Postal service clerks (SOC 43-5051)
  
  
            
    | Location | 
    Pay Period |   | 
  ||
| 25% | 
    Median | 
    75% | 
  ||
| Illinois | Hourly | $26.84 | $30.01 | $36.37 | 
| Yearly | $55,817 | $62,426 | $75,645 | |
| Champaign Area | Hourly | $20.92 | $29.09 | $34.26 | 
| Yearly | $43,515 | $60,525 | $71,265 | |
| Charleston-Effingham-Centralia Area | Hourly | $20.92 | $29.25 | $34.26 | 
| Yearly | $43,515 | $60,833 | $71,265 | |
| Chicago-Naperville-Elgin | Hourly | $27.14 | $30.62 | $35.60 | 
| Yearly | $56,450 | $63,690 | $74,050 | |
| Cook County | Hourly | $28.07 | $31.79 | $36.37 | 
| Yearly | $58,389 | $66,124 | $75,643 | |
| Decatur Area | Hourly | $20.92 | $27.72 | $32.22 | 
| Yearly | $43,515 | $57,667 | $67,016 | |
| Dekalb-Elgin-Aurora Area | Hourly | $27.72 | $30.29 | $36.37 | 
| Yearly | $57,667 | $63,000 | $75,643 | |
| Du Page County | Hourly | $28.42 | $32.30 | $36.37 | 
| Yearly | $59,112 | $67,186 | $75,643 | |
| Edwardsville Area | Hourly | $26.45 | $28.74 | $32.75 | 
| Yearly | $55,022 | $59,770 | $68,131 | |
| Jacksonville-Carlinville-Litchfield Area | Hourly | $20.92 | $28.42 | $32.56 | 
| Yearly | $43,515 | $59,112 | $67,718 | |
| Kankakee-Morris-Pontiac Area | Hourly | $26.96 | $30.14 | $36.37 | 
| Yearly | $56,073 | $62,692 | $75,643 | |
| Lake County | Hourly | $26.20 | $28.24 | $32.81 | 
| Yearly | $54,501 | $58,729 | $68,249 | |
| McHenry County | Hourly | $28.74 | $30.54 | $36.37 | 
| Yearly | $59,770 | $63,531 | $75,643 | |
| Northwest Illinois Area | Hourly | $20.92 | $28.33 | $32.81 | 
| Yearly | $43,515 | $58,920 | $68,249 | |
| Peoria-Bloomington Area | Hourly | $26.70 | $29.48 | $34.00 | 
| Yearly | $55,542 | $61,322 | $70,713 | |
| Quincy-Macomb-Galesburg Area | Hourly | $20.92 | $27.89 | $32.67 | 
| Yearly | $43,515 | $58,007 | $67,951 | |
| Rock Island-Moline Area | Hourly | $20.92 | $29.48 | $33.31 | 
| Yearly | $43,515 | $61,322 | $69,290 | |
| Rockford Area | Hourly | $26.20 | $28.91 | $36.37 | 
| Yearly | $54,501 | $60,132 | $75,643 | |
| Shawnee National Forest Area | Hourly | $20.92 | $27.37 | $31.61 | 
| Yearly | $43,515 | $56,923 | $65,741 | |
| Springfield Area | Hourly | $26.20 | $29.76 | $33.66 | 
| Yearly | $54,501 | $61,895 | $70,012 | |
| Vermilion County | Hourly | $20.92 | $28.42 | $33.82 | 
| Yearly | $43,515 | $59,112 | $70,352 | |
| Will County | Hourly | $28.42 | $34.00 | $36.37 | 
| Yearly | $59,112 | $70,713 | $75,643 | |
| United States | Hourly | $26.64 | $29.63 | $35.60 | 
| Yearly | $55,410 | $61,630 | $74,050 | |