Highest salary at Hall Twp Sd 502 in year 2015 was $69,382. Number of employees at Hall Twp Sd 502 in year 2015 was 22. Average annual salary was $27,385 and median salary was $26,617. Hall Twp Sd 502 average salary is 42 percent lower than USA average and median salary is 39 percent lower than USA median salary.