Fort Union was built in 1828 near the confluence of the Yellowstone
and Missouri Rivers in what is today northwest North Dakota. Established
first as Fort Floyd, the site became the flagship fur trade operation
for the American Fur Company of St. Louis. By the mid-1830's, the fort
was a major trade site, attracting a wide number of Native American
groups such as the Assiniboine, Blackfeet, various Dakota bands, as
well as the Mandan, and Hidatsa. Fort Union was closed as a trade operation
in 1866.
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Bismarck, North Dakota 58505
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State Museum and Store: 8 a.m. - 5 p.m. M-F; Sat. & Sun. 10 a.m. - 5 p.m.
We are closed New Year's Day, Easter, Thanksgiving Day, and Christmas Day. We are closed at noon Christmas Eve if it falls on Mon.-Thurs. and are closed all day if it falls on Fri.-Sun.
State Archives: 8 a.m. - 4:30 p.m. M-F, except state holidays; 2nd Sat. of each month, 10 a.m. - 4:30 p.m. Appointments are recommended. To schedule an appointment, please contact us at 701.328.2091 or archives@nd.gov.
State Historical Society offices: 8 a.m. - 5 p.m. M-F, except state holidays.
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phone: 701.328.2666
email: history@nd.gov
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