Highest salary at Richland County in year 2022 was $129,715. Number of employees at Richland County in year 2022 was 75. Average annual salary was $42,702 and median salary was $38,661. Richland County average salary is 9 percent lower than USA average and median salary is 11 percent lower than USA median salary. From 2021 to 2022, the average salary of employees at this employer increased 7.2 percent, the median salary increased 9.0 percent.