Amateur
- 383
- Delmarva Stargazers On-Line
- Newsletters, star parties, mirror making, observing notes, outreach events, gallery, and archives located in Lincoln, Delaware.
- 384
- NexStar 50 Club
- For NexStar telescope owners, and grants certificates and admission for those viewing 40 of the 50 objects on the list.
- 385
- Skyscrapers: Amateur Astronomical Society of Rhode Island
- Calendar, resources, forums, gallery, and library located at North Scituate.
- 386
- The Astronomical League: Urban Club
- Rules and regulations, the list, and observation tip and guides.
- 387
- Door Peninsula Astronomical Society
- Observatory information, observing tips, gallery, and calendar of events located at Sturgeon Bay.
- 389
- Urban Astronomers
- A gathering of individuals with a common interest in learning and practicing the hobby located at Milwaukee.
- 390
- Kanawha Valley Astronomical Society
- News, observatory information, references, and store located at Charleston.
- 391
- Ohio Valley Astronomical Society
- Based in Huntington and provides announcements, events, observing sights, bulletin board, and newsletter.
- 392
- Battle Point Astronomical Association
- Calendar, news, photo album, astronomy as a hobby information and tips, and links located at Bainbridge Island.
- 393
- Eastside Astronomical Society
- Star gazing information, upcoming events, store, outreach, and links located at Bellevue.
- 394
- Everett Astronomical Society
- The EAS consists of individuals interested in Astronomy; includes meetings, newsletters and contacts.
- 395
- Mount Washington Valley Astronomy
- Resource center for the many amateur astronomers and astrophotographers in and around the Mount Washington Valley.
- 396
- Spokane Astronomical Society
- Dedicated to sharing science of astronomy with its members and local community, includes news, mailing list, resources, and events.
- 397
- Tri-City Astronomy Club of Southeastern Washington
- Newsletter, community outreach, and star party information located at Richland.