Highest salary at Tonawanda in year 2010 was $115,917. Number of employees at Tonawanda in year 2010 was 743. Average annual salary was $49,473 and median salary was $51,479. Tonawanda average salary is 6 percent higher than USA average and median salary is 18 percent higher than USA median salary. From 2009 to 2010, the median salary increased 1.5 percent.