The average custodian salary at Compton was $93,023 , which is 27 percent higher than the average salary for this job in California, and 31 percent higher than the national average for this job . Custodian salaries at Compton typically range from $74,184 to $124,105 (25th to 75th percentile). The highest reported custodian salary was $127,406. There are 8 employees at Compton with the job title custodian.