Fort Union Trading Post National Historic Site

Between 1828 and 1867, Fort Union was the most important fur trade post on the Upper Missouri River. Here, the Assiniboine and six other Northern Plains Indian Tribes exchanged buffalo robes and smaller furs for goods from around the world, including cloth, guns, blankets, and beads. A bastion of peaceful coexistence, the post annually traded over 25,000 buffalo robes and $100,000 in merchandise.

Be sure to stop at the Trade House just inside the front fort gates in the summer and early fall. Living history interpreters, rangers and staff will help you understand why Fort Union was the most important trading post on the Upper Missouri, why it endured for so long, and how, when, and why trading transactions occurred. Also, look for demonstrations of historical skills like blacksmithing, weaving, and barrel-making during the 2021 summer season.

Some of our main attractions for the summer are the Fort Union Rendezvous, the third weekend in June; Indian Arts Showcase, the first weekend in August; Living History Weekend; and Kids Craft Days on Saturdays 11-2 from July 3 to August 14. All events showcase the history and culture of this amazing place. Explore the park’s calendar to learn more.

Contact Information

Loren Yellow Bird - Fort Union Trading Post NHS
Reservations and Information:

15550 Highway 1804Williston, ND 58801 US

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Other Information

  • Hours Open

    8:00am to 6:30pm CDT Memorial Day to Labor Day, 9:00am to 5:00pm CDT Labor Day to Memorial Day
  • Seasons Open

    Open year round
  • Prices and Fees

    non-fee site
  • Accessibility

    Fort Union Trading Post sits on the Montana/North Dakota border, 25 miles southwest of Williston ND and 25 miles north of Sidney MT. The fort sits on the North Dakota side where the main parking lot is 1/4 mile on the Montana side. There is a slight climb in elevation when coming from the smaller parking lot which is about 500 feet from the fort. Park grounds are mostly accessible to wheel chairs, but there are some stairs. A ramp to the Bourgeois House Visitor Center will be installed on request and parking lot shuttle service is available for visitors who have difficulty walking. Please have a member of your party contact the ranger at the Visitor Center desk. Video program includes closed captions and narration. A hands-on exhibit of animal pelts is available.

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