Highest salary at Richmond County in year 2020 was $155,403. Number of employees at Richmond County in year 2020 was 441. Average annual salary was $40,921 and median salary was $40,503. Richmond County average salary is 13 percent lower than USA average and median salary is 7 percent lower than USA median salary. From 2019 to 2020, the average salary of employees at this employer increased 5.9 percent, the median salary increased 7.9 percent.