Custodian Senior salary at City of Thornton

The average custodian senior salary at City of Thornton was $54,076 , which is 30 percent higher than the average salary for this job in Colorado, and 13 percent higher than the national average for this job . Custodian Senior salaries at City of Thornton typically range from $52,763 to $54,732 (25th to 75th percentile). The highest reported custodian senior salary was $54,732. There are 3 employees at City of Thornton with the job title custodian senior.