Highest salary at City of Marengo in year 2020 was $126,624. Number of employees at City of Marengo in year 2020 was 17. Average annual salary was $65,381 and median salary was $57,296. City of Marengo average salary is 40 percent higher than USA average and median salary is 32 percent higher than USA median salary. From 2019 to 2020, the average salary of employees at this employer increased 24.7 percent, the median salary increased 17.3 percent.