The average custodian salary at Upland was $76,609 , which is 5 percent higher than the average salary for this job in California, and 8 percent higher than the national average for this job . Custodian salaries at Upland typically range from $38,371 to $98,052 (25th to 75th percentile). The highest reported custodian salary was $98,052. There are 3 employees at Upland with the job title custodian.