The average custodial salary at Midland Isd was $25,864 , which is 2 percent lower than the average salary for this job in Texas, and 21 percent lower than the national average for this job . Custodial salaries at Midland Isd typically range from $19,353 to $29,160 (25th to 75th percentile). The highest reported custodial salary was $76,648. There are 131 employees at Midland Isd with the job title custodial.