The average custodial salary at Alpine Isd was $21,390 , which is 19 percent lower than the average salary for this job in Texas, and 35 percent lower than the national average for this job . Custodial salaries at Alpine Isd typically range from $19,818 to $23,566 (25th to 75th percentile). The highest reported custodial salary was $24,702. There are 10 employees at Alpine Isd with the job title custodial.