Alabama

• Von Braun Astronomical Society, Huntsville, AL

Arizona

• Students for the Exploration and Development of Space, Tucson, AZ
• Saguaro Astronomy Club, Phoenix, AZ
• International Dark-Sky Association

California

• Astronomical Society of the Pacific
• Eastbay Astronomical Society, Oakland, CA
• Fremont Peak Observatory Association, Fremont Peak, CA
• Halls Valley Astronomical Group, San Jose, CA
• Hamilton Amateur Astronomers, Ontario, CA
• Hopkins Planetarium, Fremont, CA
• Kern Astronomical Society, Bakersfield, CA
• Los Angeles Astronomical Society
• Los Angeles Sidewalk Astronomers
• Mount Diablo Astronomical Society
• Orange County Astronomers
• Planetary Society
• Polaris Observatory Association
• San Francisco Amateur Astronomers (SFAA)
• San Francisco Sidewalk Astronomers
• San Jose Astronomical Association, CA
• San Mateo Astronomical Society
• Stanford Astronomical Society (SAS)
• Tri Valley Stargazers (TVS)
• Valley of the Moon Observatory Association, Kenwood, CA

Colorado

• Denver Astronomical Society
• Colorado Springs Astronomical Society
• FRASC, CO/WY
• Longmont Astronomical Society, CO
• Northern Colorado Astronomical Society, Fort Collins

Connecticut

• Boothe Memorial Astronomical Society
• Astronomical Society of New Haven

Florida

• Alachua Astronomy Club, Gainesville, FL
• Tallahassee Astronomical Society, FL
• Southern Cross Astronomical Society, Miami, FL
• South Florida Amateur Astronomers Association

Georgia

• Puckett Observatory

Illinois

• Bradley University Amateur Astronomy Club, Peoria, IL
• Lake County Astronomical Association, IL
• Ryerson Astronomical Society, Chicago, IL

Indiana

• Indiana Astronomical Society, Indianapolis

Iowa

• Ames Area Amateur Astronomers, IA
• Southeastern Iowa Astronomy Club, West Burlington

Kansas

• Northwest Kansas Astronomical Society

Kentucky

• Johnson County Middle Rocket and Astronomy Club
• National Deep Sky Observers Society

Louisiana

• The Baton Rouge Astronomical Society
• The BREC, LSU, BRAS Highland Road Park Observatory

Maine

• Astronomical Society of Northern New England, South Portland, ME
  
• Northern Stars Planetarium, Fairfield, ME

Maryland

• Central Maryland Area Amateurs
• Greenbelt Astronomy Club, Greenbelt, MD
• Harford County Astronomical Society, Bel Air, MD
• Students for the Exploration and Development of Space, College Park, MD

Massachusetts

• American Association of Variable Star Observers
• Amateur Telescope Makers of Boston, MA
• North Shore Amateur Astronomers Club, MA
• O-Team (extra-Galactic supernovae search)
• Pittsfield Astronomy Club, Pittsfield, MA

Michigan

• Eastern Michigan University Astronomy Club, Ypsilanti
• Grand Rapids Amateur Astronomical Association, MI
• KAS Online (Kalamazoo Astronomical Society), West Michigan, MI
• Warren Astronomical Society, MI
• Lincoln County Stargazers, Troy, MI
• Shoreline Amateur Astronomical Association, Holland, MI

Mississippi

• Jackson Astronomical Association, Jackson, MS
• Rainwater Astronomical Association, French Camp, MS

Missouri

• Central Missouri Amateur Astronomers, Columbia

Nebraska

• Prairie Astronomy Club, Lincoln, NE

Nevada

• Astronomical Society of Nevada, Las Vegas
• Las Vegas Astronomical Society, NV
• Astronomical Society of Nevada/Planetarium Science Center

New Hampshire

• New Hampsire Astronomical Society

New Jersey

• Amateur Astronomers, Inc., Union County College, Cranford, New Jersey
• New Jersey Astronomical Association
• SETI League

New Mexico

• The Albuquerque Astronomical Society, NM

New York

• Amateur Observers,NY
• Astronomical Society of Long Island, NY
• Kopernik Astronomical Society, Vestal, NY
• Martz Observatory & Astronomical Association, Jamestown NY
• Mid-Hudson Astronomy Association, Poughkeepsie, NY
• Rochester Academy of Science - Astronomy Section, Rochester, NY

North Carolina

• Charlotte Amateur Astronomy Club

Ohio

• Columbus Astronomical Society, OH
• Sandusky Valloey Amateur Astronomy Club, Tiffin, OH

Oregon

• Eugene Astronomical Society, OR
• Rose City Astronomers, Portland, OR

Pennsylvania

• Amateur Astronomers Association of Pittsburgh
• Astronomical Society of Harrisburg, PA
• Lehigh Valley Amateur Astronomical Society, Allentown, PA

Rhode Island

• Celestial Observers of R.I., Providence, RI

South Carolina

• Roper Mountain Astronomers

Texas

• Austin Astronomical Society, TX
• Crossroads Astronomy Club, Victoria, TX
• Houston Astronomical Society
• West Texas Astronomers, Midland
• San Antonio Astronomical Observers Group, TX

Vermont

• Stellafane, Springfield, VT

Virginia

• Back Bay Amateur Astronomers
• Northern Virginia Astronomy Club (NOVAC)

Washington

• Everett Astronomical Society, WA
• Friends of Galileo, Kelso, WA
• Nearby Star Observers (NBSO)
• Spokane Astronomical Society, WA
• Yakima Valley Astronomy Club

Wyoming

• Cheyenne Astronomical Society, WY
• FRASC, CO/WY
• Laramie Astronomical Society and Space Observers, WY