Custodian salary at City of Thornton

The average custodian salary at City of Thornton was $45,696 , which is 26 percent higher than the average salary for this job in Colorado, but 36 percent lower than the national average for this job . Custodian salaries at City of Thornton typically range from $43,597 to $47,815 (25th to 75th percentile). The highest reported custodian salary was $47,815. There are 19 employees at City of Thornton with the job title custodian.