Custodian salary at Mercer County

The average custodian salary at Mercer County was $21,979 , which is 24 percent lower than the average salary for this job in Kentucky, and 69 percent lower than the national average for this job . Custodian salaries at Mercer County typically range from $21,715 to $23,904 (25th to 75th percentile). The highest reported custodian salary was $24,518. There are 14 employees at Mercer County with the job title custodian.