Highest salary at Winfield in year 2016 was $600,000. Number of employees at Winfield in year 2016 was 193. Average annual salary was $56,156 and median salary was $51,600. Winfield average salary is 20 percent higher than USA average and median salary is 19 percent higher than USA median salary. From 2015 to 2016, the average salary of employees at this employer increased 4.0 percent, the median salary increased 0.7 percent.