Highest salary at City of Ballwin in year 2021 was $149,633. Number of employees at City of Ballwin in year 2021 was 140. Average annual salary was $53,776 and median salary was $54,832. City of Ballwin average salary is 15 percent higher than USA average and median salary is 26 percent higher than USA median salary. From 2020 to 2021, the average salary of employees at this employer increased 5.4 percent, the median salary increased 2.1 percent.