population of benton county wa
In 2015, Benton Countyâs population was 190,309 with a 8.6 percent growth from 2010 to 2015 compared to the stateâs growth rate of 6.6 percent over the same time period. The largest city in Benton County is Kennewick with a population of 79,120 in 2015.Second largest city is Richland with population at 53,410.