...Standard & Poor's Ratings Services assigned its '###' long-term rating to King County, Wash.'s series 2015B, 2015C, and 2015D limited-tax general obligation (GO) and limited-tax GO refunding bonds. In addition, Standard & Poor's affirmed its '###' long-term rating and underlying rating (SPUR) on the county's previously issued GO bonds, its '##+' long-term rating and SPUR on the county's appropriation obligations, and its '###' long-term rating on the King County Housing Authority's bonds backed by a contingent loan agreement with the county. Standard & Poor's also affirmed its '###/A-1+' rating on certain county GO debt, with the short-term rating based on the short-term rating on State Street Bank & Trust Co, the liquidity provider. The outlook, where applicable, is stable. The series 2015B, 2015C, and 2015D bonds are general obligations of the county secured by the county's full faith, credit, and resources, including a pledge to levy ad valorem property taxes within statutory limitations,...