Highest City Of Grimes employee salary in year 2016 was $143,000. City Of Grimes employees number in year 2016 was 229. City Of Grimes average salary was $24,805 and median salary was $20,509. According to the last payroll, City Of Grimes average salary is 67 percent lower than USA average and 49 percent lower than Iowa state average. City Of Grimes employee salaries are usually between $7,046 and $33,467. Top 10% of highest-earning employees have salaries ranging from $53,165 to $143,000.