Highest salary at Peoria County in year 2023 was $183,145. Number of employees at Peoria County in year 2023 was 675. Average annual salary was $56,001 and median salary was $53,330. Peoria County average salary is 19 percent higher than USA average and median salary is 23 percent higher than USA median salary. From 2022 to 2023, the average salary of employees at this employer increased 8.1 percent, the median salary increased 11.3 percent.