Highest Issaquah employee salary in year 2017 was $288,957. Issaquah employees number in year 2017 was 2,249. Issaquah average salary was $57,045 and median salary was $54,836. According to the last payroll, Issaquah average salary is 24 percent lower than USA average and 22 percent lower than Washington state average. Issaquah employee salaries are usually between $32,466 and $77,799. Top 10% of highest-earning employees have salaries ranging from $92,581 to $288,957.