The average custodian salary at Quay County was $42,739 , which is 31 percent higher than the average salary for this job in New Mexico, but 40 percent lower than the national average for this job . Custodian salaries at Quay County typically range from $38,143 to $49,167 (25th to 75th percentile). The highest reported custodian salary was $49,167. There are 3 employees at Quay County with the job title custodian.