Highest salary at City of Colona in year 2021 was $68,313. Number of employees at City of Colona in year 2021 was 15. Average annual salary was $36,301 and median salary was $36,941. City of Colona average salary is 23 percent lower than USA average and median salary is 15 percent lower than USA median salary. From 2020 to 2021, the average salary of employees at this employer increased 7.6 percent.