Amtrak and the Pierce County Sheriff's Office says the locomotive and the baggage car of the Amtrak Cascades train derailed around 2:30 p.m. near the town of Steilacoom. The train runs between Vancouver, Canada, and Eugene-Springfield, Oregon.
The train, which was carrying 267 passengers, derailed near the Chambers Bay golf course, which was the site of the 2015 U.S. Open.
Amtrak says all passengers were evacuated and provided with alternate transportation.
The cause of the derailment is under investigation.