The average custodian salary at Las Vegas was $86,537 , which is 126 percent higher than the average salary for this job in Nevada, and 22 percent higher than the national average for this job . Custodian salaries at Las Vegas typically range from $81,816 to $91,258 (25th to 75th percentile). The highest reported custodian salary was $94,349. There are 4 employees at Las Vegas with the job title custodian.