Highest City Of Gridley employee salary in year 2018 was $143,634. City Of Gridley employees number in year 2018 was 49. City Of Gridley average salary was $58,263 and median salary was $53,550. According to the last payroll, City Of Gridley average salary is 22 percent lower than USA average and 37 percent lower than California state average. City Of Gridley employee salaries are usually between $47,165 and $68,601. Top 10% of highest-earning employees have salaries ranging from $102,801 to $143,634.