Highest salary at City Of Clayton in year 2017 was $200,013. Number of employees at City Of Clayton in year 2017 was 25. Average annual salary was $70,476 and median salary was $64,624. City Of Clayton average salary is 50 percent higher than USA average and median salary is 49 percent higher than USA median salary. From 2016 to 2017, the average salary of employees at this employer increased 12.3 percent, the median salary increased 7.6 percent.