Highest City of Alton employee salary in year 2024 was $141,457. City of Alton employees number in year 2024 was 102. City of Alton average salary was $59,727 and median salary was $60,116. According to the last payroll, City of Alton average salary is 20 percent lower than USA average and 7 percent lower than Illinois state average. City of Alton employee salaries are usually between $52,849 and $70,365. Top 10% of highest-earning employees have salaries ranging from $78,587 to $141,457. From 2023 to 2024, the average salary of employees at this employer increased 9.8 percent, the median salary increased 5.3 percent.