Highest Onalaska employee salary in year 2017 was $121,936. Onalaska employees number in year 2017 was 122. Onalaska average salary was $39,771 and median salary was $38,311. According to the last payroll, Onalaska average salary is 47 percent lower than USA average and 46 percent lower than Washington state average. Onalaska employee salaries are usually between $16,861 and $59,737. Top 10% of highest-earning employees have salaries ranging from $75,801 to $121,936.