Highest salary at Oklahoma County in year 2020 was $114,899. Number of employees at Oklahoma County in year 2020 was 1,646. Average annual salary was $29,247 and median salary was $26,954. Oklahoma County average salary is 38 percent lower than USA average and median salary is 38 percent lower than USA median salary. From 2019 to 2020, the average salary of employees at this employer increased 11.1 percent, the median salary increased 7.5 percent.