The Heikkinen Family Society was founded at Nilsiä in 1978.
As stated in the rules, the purpose of the Society is to study different phases of the family and its history, cherish the traditions of the family and increase the feeling of togetherness among its members. To achieve this, the Society aims to
- organize meetings and other activities annually
- gather information on the family and make it available for the members
- publish suitable material
- list the family members