 The city had a population of 16,336 at the 2010 census.Centralia is twinned with Chehalis, located to the south near the confluence of the Chehalis and Newaukum rivers.In the 1850s and 1860s, Centralia's Borst Home, at the confluence of the Chehalis and Skookumchuck Rivers, was the site of a toll ferry, and the halfway stopping point for stagecoaches operating between Kalama, Washington and Tacoma.