Maple Valley Astronomical Society
- Discussion board, events, images, and links.
- http://www.maplevalleyastro.org/

Battle Point Astronomical Association
- Calendar, news, photo album, astronomy as a hobby information and tips, and links located at Bainbridge Island.
- http://www.bpastro.org

Yakima Astronomical Society
- General information, news, and events.
- http://www.perr.com/yvac.html

Tri-City Astronomy Club of Southeastern Washington
- Newsletter, community outreach, and star party information located at Richland.
- http://www.tri-cityastronomyclub.org/

Seattle Astronomical Society
- Resources, newsletter, gallery, events, news, and calendar.
- http://www.seattleastro.org/

The Central Washington University Astronomy Club
- Calendar, club gallery, the sky, and newsletter.
- http://www.cwu.edu/~astroclb/

Whatcom Association of Celestial Observers
- Events, gallery, newsletter, resources, programs, and links located in Ferndale.
- http://www.whatcomastronomy.org/

Spokane Astronomical Society
- Dedicated to sharing science of astronomy with its members and local community, includes news, mailing list, resources, and events.
- http://www.spokaneastronomical.org/

Olympic Astronomical Society
- Provides library and equipment section and links located at Tracyton.
- http://www.olympicastronomicalsociety.com/

Eastside Astronomical Society
- Star gazing information, upcoming events, store, outreach, and links located at Bellevue.
- http://www.eastsideastro.org