The Tualatin Valley, viewed from a majority of homes in Forest Heights, was once occupied by the Atfalati (or Tualatin) band of Kalapuya Indians. The Atfalati moved throughout the valley during the spring, summer and fall and spent winters in permanent villages along the Tualatin River and its tributaries. Evidence supports the Atfalati inhabiting Beaverton, Tualatin and Cedar Mill and strongly suggests they also inhabited what is now NW Portland, including Forest Heights.