The average custodial salary at Sunnyvale Isd was $19,273 , which is 27 percent lower than the average salary for this job in Texas, and 41 percent lower than the national average for this job . Custodial salaries at Sunnyvale Isd typically range from $15,770 to $19,840 (25th to 75th percentile). The highest reported custodial salary was $42,294. There are 16 employees at Sunnyvale Isd with the job title custodial.