Cooperating Association

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Fort Union Assoc.

The Fort Union Association is a Cooperating Association, a nonprofit organization, incorporated under the laws of North Dakota, authorized to function and conduct business associated with Fort Union Trading Post National Historic Site under agreement with the National Park Service.

ORDER BY PHONE: To place a telephone order, inquire about items listed in our Tradehouse Catalog, or obtain answers to any product-related questions, please call us toll-free at 1-800-434-0233. Our offices are open from 9:00 am to 5:30 pm, Central Time, seven days a week, in Winter or from 8:00 am to 8:00 pm, Central Time, in Summer. We accept VISA and MasterCard.


Last updated: February 1, 2019

Contact the Park

Mailing Address:

15550 Highway 1804
Williston, ND 58801


(701) 572-9083

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