The District began as District #9 in 1915, with the Detroit Rotary Club and the entire Lower Peninsula of Michigan. Three years later, in 1918, the District became international with Southern Ontario, Canada and the Windsor Rotary club (later Windsor 1918 Rotary Club). It was not until 1957, after five further changes in District boundaries and numbers that District 640 was created.
Starting July 1, 1991, District 640 officially became District 6400 to help accommodate Rotary International’s growing number of Districts worldwide.
District 6400 has had a long rich history of being an International District with clubs in Canada and United States of America.
District 6400 has seen the development of an uncountable number of community projects that have improved the quality of living of people both locally and worldwide. In every community of our District there is evidence that Rotarians have been at work, contributing time, energy, expertise and financial support to meet community and individual needs.
The youth of our District have been a very important part of the District 6400 since 1915, with Rotary Youth Exchange Students and the formation of many Interact and Rotaract Clubs. Since 1978, our District has had an annual Rotary Youth Leadership Awards event.
With the introduction of the Governor’s Golf Outing and with the support of Rotarians and member clubs, the District has been increasingly active in the support of World Community Service Projects.
Our District is very proud of all the District 6400 Rotary Volunteers who have participated in Rotary International Programs in foreign countries.  They gave their time and talents to help others in need. Many Rotarians have participated in critically needed National Immunization Days in Asia and Africa. District 6400 Rotarians have served in India, Guatemala, Venezuela, Ghana and Honduras among other countries.
In addition, District 6400 has supported the Health, Hunger and Humanities Program, sponsoring many Special Grants to third world countries for water wells, agriculture programs, medical equipment and much more. Our District has sponsored fund raising performances by the Chinadega Chorus of Nicaragua. Our Rotary Clubs are actively involved in District Simplified Grants for local and world community projects.
The financial support of The Rotary Foundation of Rotary International by District 6400 Rotarians has exceeded on astounding $ 7.6 million dollars. Our Rotarians have exceeded contributions to the Annual Programs Fund of over $100 per member for the past ten years! There are over 3,700 Paul Harris Fellows in District 6400. This has permitted District 6400 to grant more than 150 Ambassadorial Scholarships and 2 World Peace Scholarships, and participate in the hosting of 25 Group Study Exchanges with other countries, including Netherlands, Australia, Brasil, Spain, South Africa, India, Finland, Russia, Japan, Chile, Taiwan, Greece and New Zealand. Plus 97 Matching Grants to many places in our world.
Recent District 6400 accomplishments include: Trenton Rotarian PRID Michael McCullough who served on the Rotary International Board of Directors with great distinction in 2003 to 2005, LaSalle Centennial Rotary Club chartered, Plymouth Rotarian Tom Kennedy applying for a Hunger, Health and Humanity Grant to The Rotary Foundation. Some recent major club local projects include Livonia Rotary’s “Rotary Cares”, Amherstburg Rotary’s “Building a Home of Hope’, Trenton Rotary’s “Get R’ Done” Some Internatioal projects and major fund raisers include the “Children of the Dump’ in Chinedega, Nicaragua, "R.E.L.A.Y." in Ghana and the "Honduras Project".
District 6400 continues to have the strong support of all the Past District Governors!
District 6400 is now honoured to have its first woman District Governor, Jennifer Jones in 2007 - 2008!
These are but a few highlights, yet they indicate a strong commitment on the part of every Rotarian in Super District 6400 to serve and work toward the betterment of people everywhere.
Our Super District 6400 and its 51 Rotary Clubs will continue to sponsor countless projects in all our communities during the third year of the second Century of Rotary Service!

Over the years, District 6400 has contributed many leaders to Rotary International. Since 1915, some 92 past and current
District Governors served or are serving Rotary International. Some of the more notable include:

ROTARY INTERNATIONAL
AST OFFICERS
PRESIDENTS
1946-47 Richard C. Hedke, Detroit
1989-90 Hugh M. Archer, Dearborn