Highest salary at Butler County in year 2023 was $135,100. Number of employees at Butler County in year 2023 was 141. Average annual salary was $40,882 and median salary was $42,563. Butler County average salary is 13 percent lower than USA average and median salary is 2 percent lower than USA median salary. From 2022 to 2023, the average salary of employees at this employer increased 0.3 percent.