Highest salary at Tomball Isd in year 2017 was $210,550. Number of employees at Tomball Isd in year 2017 was 2,053. Average annual salary was $45,072 and median salary was $53,725. Tomball Isd average salary is 4 percent lower than USA average and median salary is 24 percent higher than USA median salary. From 2016 to 2017, the average salary of employees at this employer increased 2.6 percent, the median salary increased 2.8 percent.