The most obvious, and very unbiased scientific opinion, OTVARC is the best club!

Here is a short list of amateur radio clubs in the area

PARC

Clark County Amateur Radio Club

Williammette Valley DX Club, Portland – https://wvdxc.org/

ORCA DX Contest Club, Vancouver BC

Here is a short list of local events

SEA-PAC – First weekend in June seapac.org

Mike and Key Swapmeet – https://www.mikeandkey.org/flea.php

Swaptopberfest – October in Salem/Rickreall

Salem Hamfair & Computer/Electronics Swapmeet

Microhams Digital Conference

You can also look here for PNW ham events: http://www.n7cfo.com/amradio/hf/hf.htm