Custodian salary at Grand Isle Supervisory Union

The average custodian salary at Grand Isle Supervisory Union was $37,624 , which is 4 percent higher than the average salary for this job in Vermont, but 47 percent lower than the national average for this job . Custodian salaries at Grand Isle Supervisory Union typically range from $37,648 to $39,957 (25th to 75th percentile). The highest reported custodian salary was $40,248. There are 5 employees at Grand Isle Supervisory Union with the job title custodian.