The American Legion Department of Missouri was chartered on August 1, 1920. There are currently American Legion Posts located throughout the state, comprised of over 44,000 members.
The Posts are grouped by individual Counties, the Counties by Districts (17 Districts) and the Districts under the Department (State). Each of the levels, including the Department, has committees devoted to Americanism, community service, youth activities, volunteerism, legislative and religious matters, veterans rehabilitation, and more