 Based on per capita income, one of the more reliable measures of affluence, Riverbend ranks 87th of 522 areas in the state of Washington to be ranked.Riverbend is located in east-central King County at (47.469614, -121.754279), in the valley of the South Fork of the Snoqualmie River.It is bordered to the north, across Interstate 90, by the city of North Bend.