Highest salary at Gonzales Isd in year 2016 was $145,000. Number of employees at Gonzales Isd in year 2016 was 444. Average annual salary was $38,478 and median salary was $42,344. Gonzales Isd average salary is 18 percent lower than USA average and median salary is 3 percent lower than USA median salary. From 2015 to 2016, the average salary of employees at this employer increased 5.5 percent, the median salary increased 2.2 percent.