Highest salary at Hamilton County in year 2018 was $100,991. Number of employees at Hamilton County in year 2018 was 141. Average annual salary was $40,081 and median salary was $41,060. Hamilton County average salary is 14 percent lower than USA average and median salary is 6 percent lower than USA median salary. From 2017 to 2018, the average salary of employees at this employer increased 6.9 percent, the median salary increased 1.4 percent.