Highest salary at Winona County in year 2021 was $186,082. Number of employees at Winona County in year 2021 was 372. Average annual salary was $54,458 and median salary was $60,528. Winona County average salary is 16 percent higher than USA average and median salary is 39 percent higher than USA median salary. From 2020 to 2021, the average salary of employees at this employer increased 4.5 percent, the median salary increased 4.0 percent.