Highest City Of San Mateo employee salary in year 2018 was $265,782. City Of San Mateo employees number in year 2018 was 531. City Of San Mateo average salary was $104,958 and median salary was $100,284. According to the last payroll, City Of San Mateo average salary is 40 percent higher than USA average and 8 percent higher than California state average. City Of San Mateo employee salaries are usually between $73,976 and $127,906. Top 10% of highest-earning employees have salaries ranging from $174,825 to $265,782. From 2017 to 2018, the average salary of employees at this employer increased 13.2 percent, the median salary increased 15.7 percent.