The Tri-Cities is a mid-sized metropolitan area of approximately 271,124 people that also includes the cities of Kennewick and Richland in 2013 estimate.
ITri-Cities iyindawo yamadolobha aphakathi nendawo enabantu abalinganiselwa ku-296,224 okubandakanya amadolobha aseKennewick naseRichland ngokulinganisela kuka-2018.