Highest salary at City Of Colona in year 2018 was $64,258. Number of employees at City Of Colona in year 2018 was 20. Average annual salary was $29,707 and median salary was $32,276. City Of Colona average salary is 37 percent lower than USA average and median salary is 26 percent lower than USA median salary. From 2017 to 2018, the median salary increased 3.1 percent.