TAXATION - ESTABLISHMENT OF UNIFORM MILLAGE RATE FOR CERTAIN COUNTIES The assessor of a county of the fifth class or under, in implementation of the authority granted to such counties under RCW 84.52.050, may not fix a greater millage rate for the county's regular property tax levy for general county purposes with regard to taxable property located in unincorporated areas of the county than he fixes as to such property which is located within incorporated cities or towns.