Highest salary at Richland County in year 2022 was $128,355. Number of employees at Richland County in year 2022 was 203. Average annual salary was $39,058 and median salary was $42,854. Richland County average salary is 17 percent lower than USA average and median salary is 1 percent lower than USA median salary. From 2021 to 2022, the average salary of employees at this employer increased 0.6 percent.