There's a lady named Linda Kranovich (very good teacher; $120/month when I went) who I took lessons from 6 years ago. She lives in Milwaukie, about 25 minutes away from Oregon City give or take.
If you have a piano, I could probably come by weekly or more often than that to give you lessons because I'll be going to CCC, thus going through Oregon City almost every day. I'd probably say $15 for a half-hour lesson every week or $25 for a 1-hour lesson weekly or 2 half-hour lessons weekly.
Also, I won't teach you if you don't have a piano of your own; you can get them for free or cheap on craigslist and you can't get good or even decent unless you practice every day.