Quadri-, quadru-, quadr-is a Latin prefix related to the verb quadrare âto make squareâ, quadratus âsquareâ etc. Quad is simply an English shortening of quadrangle, quadruplet etc. So quadri-and quad are actually the same word.
The Washington state sales tax rate is 6.5% , and the average WA sales tax after local surtaxes is 8.89% 1  . Groceries and prescription drugs are exempt from the Washington sales tax. 2  Counties and cities can charge an additional local sales tax of up to 3.1%, for a maximum possible combined sales tax of 9.6%.
Over 60 cities, towns and census-designated places (CDPs) in the state of Washington are considered part of King County. Average effective property tax rates vary throughout the county. The lowest average effective property tax rate in the county is 0.59%. The highest is 1.36%. That means many residents in King County have a lower property tax burden than most people across the country. Median home values in King County range from $185,500 in Algona to $1 million in places such as Yarrow Point, Medina and Clyde Hill.