Washington's September jobless rate dropped two-tenths of a percent to 9.1 percent, said the Employment Security Department on Wednesday.
Even so, the slight drop is accompanied by the loss of 18,400 jobs on a seasonally adjusted basis.
Construction lost the most in the past month, dropping by 1,800 jobs statewide.
The state manufacturing sector enjoyed the largest job gains over August, with an estimated 800 jobs added. Education and health services and professional and business services also reported growth.
Total nonfarm jobs are about 27,000 higher in September 2011 than one year ago, the ESD also reported.
Specific county numbers will be released next Tuesday.
To study the numbers, here's the ESD link.