The average aide salary at Zillah was $20,447 , which is 39 percent lower than the average salary for this job in Washington, and 37 percent lower than the national average for this job . Aide salaries at Zillah typically range from $17,395 to $22,190 (25th to 75th percentile). The highest reported aide salary was $31,956. There are 25 employees at Zillah with the job title aide.