Atlanta Childfree - Social group for singles and couples. Includes message board and mailing list. Georgia.
Babes Without Babes - A social group for women 35 and older in Edmonton, Alberta who do not have children and who want to connect with other women living the same lifestyle.
Big Kids No Kids - Created by an Irish couple, this organisation proposes various activities for child free adults. Includes a forum and weblog. [English and French]
Childfree social club for South East Michigan - An all-volunteer, non-profit social club for couples and singles who, for whatever reason, have never had children. The goal is to make childfree friends in a welcoming atmosphere.
Childfree Zone - Phoenix AZ - This is the metropolitan Phoenix gathering place for adults with no parental ambitions. There is no agenda, except to socialize with like minded adults.
Childless by Choice - An information clearinghouse for people who have decided not to have children, and for those who are deciding whether or not to become parents.