The average custodial salary at Krum Isd was $23,049 , which is 12 percent lower than the average salary for this job in Texas, and 30 percent lower than the national average for this job . Custodial salaries at Krum Isd typically range from $20,000 to $26,800 (25th to 75th percentile). The highest reported custodial salary was $36,650. There are 17 employees at Krum Isd with the job title custodial.