Highest salary at Greenfield in year 2010 was $58,631. Number of employees at Greenfield in year 2010 was 27. Average annual salary was $38,091 and median salary was $48,986. Greenfield average salary is 19 percent lower than USA average and median salary is 13 percent higher than USA median salary. From 2009 to 2010, the average salary of employees at this employer increased 12.5 percent, the median salary increased 4.0 percent.