The average custodial salary at Sonora Isd was $25,419 , which is 3 percent lower than the average salary for this job in Texas, and 23 percent lower than the national average for this job . Custodial salaries at Sonora Isd typically range from $24,431 to $26,422 (25th to 75th percentile). The highest reported custodial salary was $27,334. There are 10 employees at Sonora Isd with the job title custodial.