Highest salary at Ridgeland Sd 122 in year 2018 was $156,093. Number of employees at Ridgeland Sd 122 in year 2018 was 223. Average annual salary was $52,314 and median salary was $51,634. Ridgeland Sd 122 average salary is 12 percent higher than USA average and median salary is 19 percent higher than USA median salary. From 2017 to 2018, the average salary of employees at this employer increased 10.0 percent, the median salary increased 5.5 percent.