The average custodial salary at Lexington Isd was $17,974 , which is 32 percent lower than the average salary for this job in Texas, and 45 percent lower than the national average for this job . Custodial salaries at Lexington Isd typically range from $16,471 to $19,002 (25th to 75th percentile). The highest reported custodial salary was $24,300. There are 9 employees at Lexington Isd with the job title custodial.