Highest salary at Pierce County in year 2021 was $70,300. Number of employees at Pierce County in year 2021 was 75. Average annual salary was $30,490 and median salary was $31,790. Pierce County average salary is 35 percent lower than USA average and median salary is 27 percent lower than USA median salary. From 2020 to 2021, the average salary of employees at this employer increased 5.4 percent, the median salary increased 8.7 percent.