• Members the participants - and benefactors - of the entire organization.
• Clubs the core unit of the Toastmasters organization typically made up of 20 to 30 members.
  The mission of a Toastmasters club is to provide a mutually supportive and positive learning environment in which every member has the opportunity to develop communication and leadership skills, which in turn foster self-confidence and personal growth.
• Areas a group of 4 to 6 clubs supported by an area governor and area council made up of club officers.
  The mission of the area is to provide district contact, support and services to the club so that the club may in turn fulfill its responsibilities to its members.
• Divisions a group of 4 to 6 areas supported by a division governor and division council made up of area governors.
  The mission of the division is to serve the clubs assigned to it by providing district support and resources through the area governors.
• Districts a geographic area established by the Board of Directors of Toastmasters International. District 4 geograpgic area includes the San Francisco peninsula, Silicon Valley, and the Santa Cruz and Monterey peninsulas.
  The mission of the district is to enhance the performance and extend the network of clubs, thereby offering greater numbers of people the opportunity to benefit from the Toastmasters educational program.
• Regions a grouping of districts for the purpose of nominating members to the International Board of Directors, training of the top three district officers, selection of a regional representative at the International Speech Contest. District 4 is in Region II, which includes the southwestern United States and Hawaii

Every group within this structure exists solely to improve the activities offered by the Toastmasters program, and each of the larger groups is dedicated to helping the more local groups and individual clubs realize the Toastmaster vision of effective oral communication.