The Bannack Historical and Museum Association was established in 1990 as a formal support organization to Bannack State Park. In 1992 the name was shortened to the Bannack Association.
The Association is a fully-credited, tax-exempt, non-profit organization, incorporated under the laws of Montana. Its purpose is to assist with preservation efforts of Bannack, Montana's First Territorial Capitol, and promoting its historical and cultural assets. Members receive a newsletter on a regular basis outlining Association activities and Bannack History. Activities and events are planned throughout the year to promote the purposes of the organization. All fund raised through the Bannack Association are used for the sole purpose of promoting or stabilizing Bannack. The organization is governed by an elected Board of Directors.