blog.redfin.com — Of the three Central Puget Sound counties, foreclosures again hit Pierce County hardest, with one in 483 households in trouble. In Snohomish County, it was one in every 966.King County fared best, with one household in 1,265 in troubleā¦In Washington state, 1 percent of outstanding mortgages were subprime in the fourth quarter 2007...