We've spent past few Saturday mornings at the PSU farmers market. While I fully intend to try out as many of Portland's markets as I can... I keep going back to the Hollywood and the PSU market. The extremely convenient locations I think are probably part of the big draw, as well as the familiarity that the Hollywood holds. The PSU market is quickly becoming familiar, but I feel like I could visit there every weekend of the summer and still have more to try.
With hours of 8:30 - 2, open March through October, you'd think it was possible to get a taste of everything, but not only the market huge, but the vendors are all so delicious looking! I just wander around looking and sampling and taking it in.
The PSU Farmers Market is located at Portland State University in the South Park Blocks between SW Hall & SW Montgomery. After being a student at PSU, parking on a weekend in the summer doesn't actually feel that terrible, and there are always lots a few blocks away if you dont want to parallel park