Highest salary at Piatt County in year 2023 was $149,551. Number of employees at Piatt County in year 2023 was 383. Average annual salary was $33,052 and median salary was $29,700. Piatt County average salary is 29 percent lower than USA average and median salary is 32 percent lower than USA median salary. From 2022 to 2023, the average salary of employees at this employer increased 3.7 percent, the median salary increased 3.6 percent.