In 2003, there were about 2,996 regional, national, and international organizations within the state.
The Minnesota Historical Society, founded in 1849, is the oldest educational organization in the state and the official custodian of its history. The society is partly supported by state funds, as are such other semistate organizations as the Academy of Science (which promotes interest in science among high school students), the Minnesota State Horticultural Society, and the Humane Society. The Sons of Norway and American Swedish Institute, both with headquarters in Minneapolis, seek to preserve the state's Scandinavian heritage.
Among the various professional, commercial, educational, and hobbyist associations with headquarters in Minnesota are the American Collectors Association and the National Scholastic Press Association, Minneapolis; the American Board of Radiology, the American Ophthalmological Society, and the American Board of Physical Medicine and Rehabilitation, Rochester; and World Pen Pals, St. Paul. The North American Fishing Club and North American Hunting Club are located in Minnetonka.
The National Marrow Donor Program is based in Minneapolis, as is the National Council of the United States, International Organization of Good Templars.