Highest salary at City Of Marengo in year 2016 was $118,159. Number of employees at City Of Marengo in year 2016 was 18. Average annual salary was $65,029 and median salary was $58,886. City Of Marengo average salary is 39 percent higher than USA average and median salary is 35 percent higher than USA median salary. From 2015 to 2016, the average salary of employees at this employer increased 5.8 percent, the median salary increased 8.5 percent.