Highest salary at Joliet S D 204 in year 2018 was $162,356. Number of employees at Joliet S D 204 in year 2018 was 538. Average annual salary was $29,919 and median salary was $24,854. Joliet S D 204 average salary is 36 percent lower than USA average and median salary is 43 percent lower than USA median salary. From 2017 to 2018, the average salary of employees at this employer increased 4.4 percent, the median salary increased 2.1 percent.