Highest salary at City of Colona in year 2020 was $65,193. Number of employees at City of Colona in year 2020 was 17. Average annual salary was $33,732 and median salary was $38,564. City of Colona average salary is 28 percent lower than USA average and median salary is 11 percent lower than USA median salary. From 2019 to 2020, the median salary increased 3.5 percent.