Highest salary at City of Ontario in year 2022 was $98,610. Number of employees at City of Ontario in year 2022 was 82. Average annual salary was $46,834 and median salary was $52,597. City of Ontario average salary is the same as USA average and median salary is 21 percent higher than USA median salary. From 2021 to 2022, the average salary of employees at this employer increased 2.2 percent.