The federal Bureau of Labor Statistics found Benton County's average weekly wage was $916 in the third quarter of 2013. That was the third-highest among Washington's 39 counties. Meanwhile, Franklin County workers averaged only $658 per week, which ranked 26th in the state.
Walla Walla County had the 18th-lowest average wage in the state, $700.
Despite the differences, all three counties' wages were below the national average of $922 per week. Only King County and Snohomish County workers earned more.
The lowest weekly wage in the state was $518 in Okanogan County.