Highest City Of El Cajon employee salary in year 2018 was $219,002. City Of El Cajon employees number in year 2018 was 395. City Of El Cajon average salary was $69,593 and median salary was $68,814. According to the last payroll, City Of El Cajon average salary is 7 percent lower than USA average and 28 percent lower than California state average. City Of El Cajon employee salaries are usually between $49,146 and $87,818. Top 10% of highest-earning employees have salaries ranging from $101,993 to $219,002.