The average custodial salary at Midway Isd was $22,774 , which is 13 percent lower than the average salary for this job in Texas, and 31 percent lower than the national average for this job . Custodial salaries at Midway Isd typically range from $20,025 to $25,145 (25th to 75th percentile). The highest reported custodial salary was $44,475. There are 75 employees at Midway Isd with the job title custodial.