Highest salary at Kirby Sd 140 in year 2016 was $268,694. Number of employees at Kirby Sd 140 in year 2016 was 675. Average annual salary was $43,225 and median salary was $44,712. Kirby Sd 140 average salary is 8 percent lower than USA average and median salary is 3 percent higher than USA median salary. From 2015 to 2016, the median salary increased 3.0 percent.