
Alabama
- Central Alabama Koi & Water Garden Society
- Gulf Coast Koi Society
Arizona
- Southern Arizona Koi Association (Tucson)
- Tucson Koi Society
- Valley of the Sun Koi Club (Phoenix) - Website
California
- Bakersfield Koi & Water Garden Society
- Camellia Koi
Club (Sacramento) - Website
- Central California Koi Society (Fresno) - Website
- High Desert Koi Fanciers (Palmdale)
- Ikiru Hoseki Koi Club (San Gabriel & San Fernando
Valleys)
- Koi Club of San Diego - Website
- Koi Kichi & Water Garden Club (Lakewood)
- Mendocino Coast Koi & Water Garden Society
- Nishiki Koi Club (Orange County) - Website
- San Francisco Bay Area Koi Club - Lucia Rose
- Shasta Koi & Water Garden Club (Redding)
- Southern California Koi Club (LA & Orange County)
- Ventura County Koi Society - Website
- Zen Nippon Airinkai Koi
Club
- Zen Nippon Airinkai Southern California Chapter
Colorado
- Rocky Mountain Koi Club (Denver) - Website
Florida
- First Coast Koi, Goldfish & Water Garden Club
(Jacksonville)
- Florida East Coast Koi & Water Garden Society
(Daytona Beach)
- Website
- Florida West Coast Koi & Water Garden Club
- Gainesville Koi, Goldfish & Watergarden Club - Website
- Nature's Coast Koi & Water Garden Club (Old Town)
- North Florida Koi Club (Jacksonville) - Website
- Orlando Area Koi & Pond Club - Website
- Southern Koi Association
- Tampa Bay Koi & Water Garden Club
- Tropical Koi Club of South Florida (Boca Raton) - Website
Georgia
- Atlanta Koi Club - Website
- Middle Georgia Koi Society
Hawaii
- Hawaii Goldfish & Koi Association
Idaho
- Idaho Water Garden & Koi Society - Website
Illinois
- Central Illinois Water Gardeners
- Midwest Pond & Koi Society - Bryan Bateman - Website
- Northern Midwest ZNA Chapter -
Website
- Placid Pond & Koi Association
- Prairieland Koi & Pond Society - Website
Indiana
- Indiana Koi & Water Garden Club
Iowa
- Eastern Iowa Pond Society
Kansas
Kentucky
- Greater Louisville Koi & Goldfish Society - Website
Massachusetts
- Pioneer Valley Water Garden & Koi Club - Website
Michigan
- Capital Area Koi & Water Gardening Club (Lansing)
- Website
- Great Ponds & Koi Society of West Michigan
- Michigan Koi & Pond Clubs - Southeast Chapter - Website
- Mid-Michigan Pond & Water Garden Club
Missouri
- St. Louis Water Gardening Society - Website
- Springfield Watergarden Society
- West Plains Watergarden Society
Nevada
- Cyprinus Society of Nevada
- Las Vegas Koi Club
- Northern Nevada Pond Club
- Sierra Koi Club
New York
- Genesse Valley Pond & Koi Club
- Koi & Water Garden Society of Central New York
- Niagara Frontier Koi & Pond Club - Website
North Carolina
- North Carolina Koi & Watergarden Society
- Piedmont Koi & Watergarden Society (Charlotte)
Ohio
- Dayton Koi & Goldfish Club
-
Miami Valley Water Garden Society - Website
- Ohio Koi Club (Columbus)
Oklahoma
- Cherokee Strip Water Garden Society
-
Oklahoma Koi Society (Oklahoma City)
- Tulsa Koi Society
Oregon
- Cascade Koi & Goldfish Club (Portland)
- Northwest Koi & Goldfish Club (Portland/Vancouver)
- Website
- Oregon Koi & Watergarden Society - Website
- Pacific Wonderland Koi Club
Penn Virginia Maryland
- Mid-Atlantic Koi Club (NY, NJ, PA, DE, MD, DC, VA,
WV) - Website
- ZNA Potomac Chapter Koi Club (DC, MD, PA, VA) - Website
South Carolina
- Charleston Showa Koi Club - Website
- South Carolina Koi and Water Garden Society (Upstate) - Website
Tennessee
- Nashville Pond Society
- The Great Smoky Mountains Koi Club
- The Koi Club of Middle Tennessee
- West Tennessee Pond Society (Jackson)
Texas
- Amarillo Koi Society
- Austin Koi & Goldfish Club
- Austin Pond Society - Website
- Dallas Koi Kichi Group -
Website
- Koi & Water Garden Club of North Texas - Website
- Las Pampas Koi & Water Garden Society
- Lone Star ZNA Koi
Club (Houston) - Website
- Moto-Kara Koi Kai (Houston/Galveston)
- North Texas Water Garden Society - Website
- Southwest Koi & Pond Association (El Paso)
- Texas Koi & Fancy Goldfish Society (San Antonio)
- Water Garden Club of South Texas
Washington
- Inland Empire Water Garden & Koi Society (Spokane)
- Mid Columbia Koi & Pond Club (Tri-Cities) - Website
- Olympic Koi, Goldfish & Water Garden Club
- Puget Sound Koi Club
- Washington Koi & Water Garden Society (Seattle) - Website
West Virginia
- Mountaineer Koi & Water Garden Society
Wisconsin
- Madison Area Pond Society
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