I learned to fly @ S-36, Crest Airpark. I think most of the fighting & lawsuits have run their course. I keep my RV-8 in a hangar there.
Western Airpark in Yelm is pretty nice. Kapowsin is south of Pierce County Airport, it's residential, and the skydiving operation has moved away, so it should be quiet.
Evergreen Sky Ranch is on the Enumclaw plateau east of Auburn, its grass.
Some of the residents there are very active in Washington Pilots Assc. and Antique clubs.
Vaughn's egg ranch (grass) is on the west side of Puget sound, near Port Orchard. Sometimes there is a home for sale there.
Frontier Airpark is a gated upper scale community east of Arlington Airport. Arlington is a major activity center for experimental, soaring and general aviation.
Check out the EAA326 web page, contact someone and attend a meeting, that would go a long ways to getting familliar with the area and meeting RV fliers.
Those are some of the airparks in the region that come to mind. There are smaller private strips with fewer homes, it takes a bit more time to find and explore those. That's fun.
EAA 668340, chapter 326 & IAC chapter 67
RV-8 N89SE first flight 12/26/2013
Yak55M, and the wife has an RV-4
There is nothing
-absolute nothing-half so much worth doing as simply messing around with Aeroplanes
(with apologies to Ratty)