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Alabama

Birmingham Astronomical Society
Von Braun Astronomical Society, Huntsville

Arizona

Huachuca Astronomy Club, Southeast Arizona
Phoenix Astronomical Society
Prescott Astronomy Club
Saguaro Astronomy Club, Phoenix
Students for the Exploration and Development of Space, Tucson
Tucson Amateur Astronomy Association

Arkansas

Arkansas Oklahoma Astronomical Society
Central Arkansas Astronomical Society

California

Antelope Valley Astronomy Club
Astronomical Association of Northern California
Astronomical Society of the Desert
Astronomical Unit, Santa Barbara
Central Coast Astronomical Society
Eastbay Astronomical Society, Oakland
Fremont Peak Observatory Association, Fremont
High Desert Astronomical Society
Kern Astronomical Society
Los Angeles Astronomical Society
Los Angeles Sidewalk Astronomers
Mount Diablo Astronomical Society
Orange County Astronomers
Polaris Observatory Association
Sacramento Valley Astronomical Society, Sacramento
San Diego Astronomy Association
San Francisco Amateur Astronomers
San Francisco Sidewalk Astronomers
San Jose Astronomical Association
San Mateo Astronomical Society
Santa Barbara Astronomical Unit
Santa Cruz Astronomy Club
Sonoma County Astronomical Society
South Bay Astronomical Society
Stanford Astronomical Society
Tri Valley Stargazers
UC Davis Astronomy Club
Valley of the Moon Observatory Association, Kenwood
Ventura County Astronomical Society
Warner Springs Ranch Star Gazing

Colorado

Black Canyon Astronomical Society
Colorado Springs Astronomical Society
Estes Valley Astronomical Society
FRASC, Colorado/Wyoming
Longmont Astronomical Society
National Space Science and Technology Institute
Northern Colorado Astronomical Society, Fort Collins
Sangre Stargazers Astronomy Club, Westcliffe

Connecticut

Astronomical Society of Greater Hartford
Astronomical Society of New Haven
Boothe Memorial Astronomical Society
Mattatuck Astronomical Society

Delaware

Delaware Astronomical Society
Delmarva Stargazers

Florida

Alachua Astronomy Club, Gainesville
Astronomical Society of the Palm Beaches
Brevard Astronomical Society
Central Florida Astronomical Society
Escambia Amateur Astronomers' Association, Pensacola
Local Group of Deep Sky Observers
Museum Astronomical Resource Society
Northeast Florida Astronomical Society
Southwest Florida Astronomical Society, Inc.
St. Petersburg Astronomy Club
Southern Cross Astronomical Society, Miami
Southern Nights Astronomical League of Florida
South Florida Amateur Astronomers Association
Tallahassee Astronomical Society
Winter Haven Astronomy Club

Georgia

Charlie Elliott Chapter of the Atlanta Astronomy Club
Flint River Astronomy Club, Griffin
North Georgia Astronomers
Oglethorpe Astronomical Association
Puckett Observatory
Statesboro Astronomy Club

Hawaii

Hawaiian Astronomical Society
Imiloa Astronomy Center of Hawaii
West Hawaii Astronomy Club

Idaho

Boise Astronomical Society
Idaho Falls Astronomical Society
Magic Valley Astronomical Society

Illinois

Bradley University Amateur Astronomy Club, Peoria
Champaign-Urbana Astronomical Society
Chicago Astronomical Society
Decatur Area Astronomy Club
Fox Valley Astronomical Society
Hinsdale Public Library
Lake County Astronomical Association
Latin School & Chicago Sidewalk Astronomy Club
Naperville Astronomical Association
Northwest Suburban Astronomers
Peoria Astronomical Society
River Bend Astronomy Club
Rockford Amateur Astronomers, Inc.
Ryerson Astronomical Society, Chicago
Sangamon Astronomical Society
Twin City Amateur Astronomers

Indiana

Calumet Astronomical Society
Evansville Astronomical Society
Indiana Astronomical Society
Michiana Astronomical Society
Stonebelt Stargazers
Wabash County Astronomical Society
Wabash Valley Astronomical Society, Lafayette

Iowa

Cedar Amateur Astronomers, Cedar Rapids
Des Moines Astronomical Society
Southeastern Iowa Astronomy Club, West Burlington

Kansas

Kansas Astronomical Observers
Northeast Kansas Amateur Astronomers' League Inc.

Kentucky

The Eastern Kentucky Astronomy Connection
The Louisville Astronomical Society

Louisiana

The Baton Rouge Astronomical Society
The BREC, LSU, BRAS Highland Road Park Observatory
Ouachita Valley Astronomy League
Pontchartrain Astronomical Society, New Orleans

Maine

Astronomical Society of Northern New England, South Portland
H. J. Fowler Observatory
Northern Stars Planetarium, Fairfield
Penobscot Valley Star Gazers

Maryland

The Astronomical Society of Greenbelt
Harford County Astronomical Society, Bel Air
National Capital Astronomers, Washington, D.C.
Tri-State Astronomers
Westminster Astronomical Society

Massachusetts

Aldrich Astronomical Society
American Association of Variable Star Observers
Amateur Telescope Makers of Boston
North Shore Amateur Astronomy Club

Michigan

Amateur Astronomers of Jackson
Eastern Michigan University Astronomy Club, Ypsilanti
Grand Rapids Amateur Astronomical Association
Grand Traverse Astronomical Society
Kalamazoo Astronomical Society, West Michigan
Marquette Astronomical Society
Muskegon Astronomical Society, Michigan
Seven Ponds Astronomy Club
Shoreline Amateur Astronomical Association, Holland
Sirius Stargazers Club
Student Astronomical Society at the University of Michigan
University Lowbrow Astronomers
Warren Astronomical Society

Minnesota

Eisenhower Astronomy Club
Minnesota Astronomical Society

Mississippi

Rainwater Astronomical Association, French Camp

Missouri

The Astronomical Society of Kansas City
Central Missouri Astronomical Association
Springfield Astronomical Society
St. Louis Astronomical Society

Montana

Central Montana Astronomy Society
Mission Valley Astronomy Club
Southwest Montana Astronomical Society

Nebraska

Omaha Astronomical Society
Panhandle Astronomy Club
Platte Valley Astronomical Observers
Prairie Astronomy Club, Lincoln

Nevada

Astronomical Society of Nevada
Astronomy Nevada)
Las Vegas Astronomical Society
Space Science for Schools
Western Observer's Webring (Western United States)

New Hampshire

New Hampshire Astronomical Society
Phillips Exeter Academy Astronomy Club

New Jersey

Amateur Astronomers, Inc., Union County College, Cranford
Amateur Astronomical Association of Princeton
Astronomical Society of the Toms River Area (ASTRA)
Morris Museum Astronomical Society
New Jersey Astronomical Association
SETI League
Sheep Hill Astronomical Association
United Astronomy Clubs of New Jersey

New Mexico

Alamogordo Astronomy Club
The Albuquerque Astronomical Society
Amateur Astronomers Group
Rio Grande Astronomical Society

New York

Amateur Astronomers Association of New York
Amateur Observers' Society of New York
Catskills Astronomy Club
Custer Institute Astronomy Group, Southold
Kopernik Astronomical Society, Vestal
Marshal Martz Memorial Astronomical Association, Inc.
Mid-Hudson Astronomy Association
Mohawk Valley Astronomical Society
NYSkies Astronomy Inc
Rochester Academy of Science, Rochester
Rockland Astronomy Club
The Syracuse Astronomical Society

North Carolina

Carolina Skies Astronomy Club
The Catawba Valley Astronomy Club
Charlotte Amateur Astronomers Club
Forsyth Astronomical Society
Piedmont Amateur Astronomers
Tar River Astronomy Club

North Dakota

Northern Sky Astronomical Society

Ohio

Aurora Astronomical Society
The Cincinnati Astronomical Society
Cincinnati Observatory Center / Friends of the Observatory
Columbus Astronomical Society
Lima Astronomical Society
Mahoning Valley Astronomical Society, Inc.
Ohio State University Astronomical Society
Southeast Ohio Astronomical Society
Stillwater Stargazers' Club
Warren Rupp Observatory
Wilderness Center Astronomy Club

Oklahoma

Astronomy Club of Tulsa
Oklahoma City Astronomy Club

Oregon

Eugene Astronomical Society
North West Astronomy Group
Rose City Astronomers, Portland

Pennsylvania

Amateur Astronomers Association of Pittsburgh
Astronomical Society of Harrisburg
Berks County Amateur Astronomical Society
Bucks-Mont Astronomical Association
Central Pennsylvania Observers
Delaware Valley Amateur Astronomers, Philadelphia
Erie County Mobile Observers Group
Lehigh Valley Amateur Astronomical Society, Allentown
Starlight Astronomy Club
The York County Astronomical Society

Rhode Island

Astronomical Society of Southern New England

South Carolina

Clemson Area Amateur Astronomers
Roper Mountain Astronomers

South Dakota

Sioux Empire Astronomy Club

Tennessee

Barnard Astronomical Society
Barnard-Seyfert Astronomical Society
Cumberland Astronomical Society
Gallatin High Astronomy Club
Kids Observing Celestial Heavens And Beyond (KOCHAB)
Knoxville Observers
Oak Ridge Isochronous Observation Network, Inc.
Smoky Mountain Astronomical Society

Texas

Amarillo Astronomy Club
Austin Astronomical Society
Central Texas Astronomical Society, Incorporated
City Lights Astronomical Society for Students
Crossroads Astronomy Club, Victoria
Fort Worth Astronomical Society
Houston Astronomical Society
Lipan Astronomy and Space Society (LASS)
North Houston Astronomy Club
Red River Astronomy Club
San Angelo Astronomy Association
San Antonio Astronomical Association
Starlight Observers League
Sun City Astronomers
Texas Astronomical Society of Dallas
West Texas Astronomers

Utah

Brigham Young University Astronomical Society, Provo
Ogden Astronomical Society
Salt Lake Astronomical Society
Utah Skies

Vermont

Hildene Astronomy Club
SoVerA - Southern Vermont Astronomy Group
Stellafane, Springfield
Vermont Astronomical Society

Virginia

Back Bay Amateur Astronomers
Blue Ridge Astronomy Club
Charlottesville Astronomical Society
Fairfax County Public Schools
Northern Virginia Astronomy Club
Rappahannock Astronomy Club
Roanoke Valley Astronomical Society

Washington

Eastside Astronomical Society
Everett Astronomical Society
Island County Astronomical Society
Nearby Star Observers
Olympic Astronomical Society
Spokane Astronomical Society
Tacoma Astronomical Society
Whatcom Association of Celestial Observers
Yakima Valley Astronomy Club

West Virginia

Central Appalachian Astronomy Club of West Virginia
Kanawha Valley Astronomical Society
Morgan County Observatory Foundation

Wisconsin

Chippewa Valley Astronomical Society
Door Peninsula Astronomical Society
Neville Public Museum Astronomical Society
Urban Stargazers

Wyoming

Cheyenne Astronomical Society
FRASC, Colorado/Wyoming
Jackson Hole Astronomy Club