Highest City Of Hercules employee salary in year 2018 was $228,461. City Of Hercules employees number in year 2018 was 72. City Of Hercules average salary was $73,101 and median salary was $67,931. According to the last payroll, City Of Hercules average salary is 2 percent lower than USA average and 21 percent lower than California state average. City Of Hercules employee salaries are usually between $29,573 and $101,264. Top 10% of highest-earning employees have salaries ranging from $142,733 to $228,461.