The average custodian salary at Burcham Es was $21,865 , which is 17 percent lower than the average salary for this job in Oklahoma, and 69 percent lower than the national average for this job . Custodian salaries at Burcham Es typically range from $20,780 to $22,950 (25th to 75th percentile). The highest reported custodian salary was $22,950. There are 3 employees at Burcham Es with the job title custodian.