Highest salary at City Of Gustine in year 2016 was $133,768. Number of employees at City Of Gustine in year 2016 was 22. Average annual salary was $57,932 and median salary was $48,499. City Of Gustine average salary is 24 percent higher than USA average and median salary is 12 percent higher than USA median salary. From 2015 to 2016, the average salary of employees at this employer increased 19.4 percent, the median salary increased 12.2 percent.