Highest salary at Hamilton County in year 2017 was $98,514. Number of employees at Hamilton County in year 2017 was 144. Average annual salary was $37,504 and median salary was $40,488. Hamilton County average salary is 20 percent lower than USA average and median salary is 7 percent lower than USA median salary. From 2016 to 2017, the average salary of employees at this employer increased 4.2 percent, the median salary increased 5.2 percent.