The average aide salary at Westport Elem. was $47,674 , which is 106 percent higher than the average salary for this job in Missouri, and 47 percent higher than the national average for this job . Aide salaries at Westport Elem. typically range from $38,502 to $48,686 (25th to 75th percentile). The highest reported aide salary was $80,189. There are 8 employees at Westport Elem. with the job title aide.