Highest salary at City of Monmouth in year 2022 was $67,925. Number of employees at City of Monmouth in year 2022 was 23. Average annual salary was $30,276 and median salary was $25,792. City of Monmouth average salary is 35 percent lower than USA average and median salary is 41 percent lower than USA median salary. From 2021 to 2022, the average salary of employees at this employer increased 15.1 percent, the median salary increased 9.8 percent.