Highest salary at Delta County in year 2023 was $133,591. Number of employees at Delta County in year 2023 was 348. Average annual salary was $41,963 and median salary was $45,233. Delta County average salary is 10 percent lower than USA average and median salary is 4 percent higher than USA median salary. From 2022 to 2023, the average salary of employees at this employer increased 7.7 percent, the median salary increased 11.8 percent.