I remember one time I was at the IKEA near Portland Internation Airport and they had removed a couple of the public chargers around 2-3 years ago. I didn't notice if they put them back when I swung by a few months ago.
Green Car Report: Study: Some retailers aren't doing much to support EV charging
Oregon DOT (ODOT) has awarded funding for 370 new level 2 EV chargers throughout the state. Not that many in Washington County and a few to multi-family housing locations.
Oregon Department of Transportation (ODOT) has published their "Guide for Oregon EV Charging Deployment" strategy document for those looking at building out EV charging infrastructure within the state: