Custodian salary at San Mateo

The average custodian salary at San Mateo was $26,299 , which is 64 percent lower than the average salary for this job in California, and 63 percent lower than the national average for this job . Custodian salaries at San Mateo typically range from $23,340 to $29,258 (25th to 75th percentile). The highest reported custodian salary was $31,079. There are 4 employees at San Mateo with the job title custodian.