The average custodial salary at Mineola Isd was $18,158 , which is 31 percent lower than the average salary for this job in Texas, and 45 percent lower than the national average for this job . Custodial salaries at Mineola Isd typically range from $17,226 to $18,604 (25th to 75th percentile). The highest reported custodial salary was $19,648. There are 15 employees at Mineola Isd with the job title custodial.