The average custodial salary at Killeen Isd was $22,294 , which is 15 percent lower than the average salary for this job in Texas, and 32 percent lower than the national average for this job . Custodial salaries at Killeen Isd typically range from $20,114 to $24,037 (25th to 75th percentile). The highest reported custodial salary was $53,434. There are 316 employees at Killeen Isd with the job title custodial.