| Society Name | Address | City | State | URL | URL2 | URL3 |
|---|---|---|---|---|---|---|
| Battle Point Astronomical Association | P. O. Box 10914 | Bainbridge Island | Washington | http://www.bpastro.org | ||
| Everett Astronomical Society | P.O. Box 13272 | Mill Creek | Washington | everettastro.org | ||
| Friends of Galileo | 1632 22nd Ave | Longview | Washington | |||
| Island County Astronomical Society | PO Box 325 | Oak Harbor | Washington | http://www.icas-wa.org/ | ||
| Olympic Astronomical Society | 9689 Clipper Pl NW | SIlverdale | Washington | http://www.olympicastronomicalsociety.org | ||
| Rose City Astronomers | 1945 SE Water Ave | Portland | Oregon | http://www.rosecityastronomers.org | ||
| Seattle Astronomical Society | P. O. Box 31746 | Seattle | Washington | http://www.seattleastro.org | ||
| Spokane Astronomical Society | P. O. Box 8114 | Spokane | Washington | http://www.spokaneastronomical.org/ | ||
| Whatcom Association of Celestial Observers | P. O. Box 1721 | Ferndale | Washington | https://www.whatcomastronomy.com/ | ||
| Yakima Valley Astronomical Society | 505 Santa Roza Dr #B | Yakima | Washington | https://www.yakimavalleyastro.org/ |