Yacolt is a town in Clark County, Washington, United States. The 2019 population is estimated to be 1,796. Take a look below for 10 interesting and amazing facts about Yacolt, Washington, United States. 1. Yacolt is derived from the Klickitat word “Yahkohtl,” meaning “haunted place” or “place of (evil) spirits.” 2. Another name it was…