The average aide salary at Olympia was $20,798 , which is 38 percent lower than the average salary for this job in Washington, and 36 percent lower than the national average for this job . Aide salaries at Olympia typically range from $18,488 to $23,284 (25th to 75th percentile). The highest reported aide salary was $40,632. There are 295 employees at Olympia with the job title aide.