Highest City of Gretna employee salary in year 2022 was $127,671. City of Gretna employees number in year 2022 was 40. City of Gretna average salary was $40,721 and median salary was $40,772. According to the last payroll, City of Gretna average salary is 46 percent lower than USA average and 33 percent lower than Nebraska state average. City of Gretna employee salaries are usually between $19,648 and $57,022. Top 10% of highest-earning employees have salaries ranging from $79,690 to $127,671.