The average aide salary at Houston Elem. was $35,453 , which is 53 percent higher than the average salary for this job in Missouri, and 10 percent higher than the national average for this job . Aide salaries at Houston Elem. typically range from $31,200 to $39,175 (25th to 75th percentile). The highest reported aide salary was $42,875. There are 9 employees at Houston Elem. with the job title aide.