The average aide salary at Snohomish was $23,615 , which is 29 percent lower than the average salary for this job in Washington, and 27 percent lower than the national average for this job . Aide salaries at Snohomish typically range from $21,277 to $26,314 (25th to 75th percentile). The highest reported aide salary was $40,550. There are 223 employees at Snohomish with the job title aide.