PFLAG National was founded in 1973 by a parent, Jeanne Manford. Attending a parade with her gay son, Jeanne won the hearts of many gay, lesbian, bisexual, and transgender people who begged her to speak with their parents. Jeanne held the first PFLAG Support Group meeting on March 11, 1973 at a church in Greenwich Village.  For over four decades, PFLAG has provided support to families and allies who are in need.  

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PFLAG National currently has over 400 chapters and 200,000 supporters crossing multiple generations of American families in major urban centers, small cities, and rural areas in all 50 states, the District of Columbia and Puerto Rico.  This vast grassroots network is cultivated, resourced, and serviced by PFLAG National, located in Washington, D.C., the National Board of Directors and 13 volunteer Regional Directors.