Highest salary at City Of Marengo in year 2018 was $110,325. Number of employees at City Of Marengo in year 2018 was 16. Average annual salary was $67,479 and median salary was $67,521. City Of Marengo average salary is 44 percent higher than USA average and median salary is 55 percent higher than USA median salary. From 2017 to 2018, the average salary of employees at this employer increased 10.4 percent, the median salary increased 11.2 percent.