That's according to the latest numbers from the state Employment Security Department.
Benton County's jobless rate dropped from 8.1 percent in March to 6.6 percent last month, while Franklin County saw its rate fall from 10.4 percent to 7.8 percent.
Unemployment in Walla Walla County also fell. The jobless rate dropped to 5.4 percent in April, compared to 7 percent the month before.
Benton and Franklin Counties still have higher unemployment than the state average, while Walla Walla's is slightly lower. Washington's statewide jobless rate was 5.6 percent in April.
These numbers are not seasonally adjusted.