I'm super perplexed by your interest in "Washington" generically, it's pretty well known for being a state that varies a ton. Seattle is quite different from Tacoma is different from Bellingham and wildly different from Spokane or Yakima, and the cities are all very different from the small towns which in turn vary drastically by region (coastal? In the mountains? Farm country?)

What is it that interests you about Washington? What are your goals? Do you want to live in a cool city with a big tech community while you're young and have a little money? Then I'd say go to Seattle. Do you want to try to get a job that's pretty stable and buy a house in a suburban environment? You could probably find work in the tri-cities.