Sidney Chamber Honors Dynneson Ranch for Ag Contributions

Dynneson family recognized for their involvement in local agriculture and community events.

Published on Feb. 20, 2026

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The Dynneson Ranch was awarded the Agriculture Award by the Sidney Chamber of Commerce & Agriculture at their 110th-Anniversary Celebration. The Dynneson family, including Keith and Tammy Dynneson and their daughters, were recognized for their contributions to the local agriculture community and their efforts to bring the public and agriculture together through events like the annual Keith Steinbeisser Memorial Livestock Judging.

Why it matters

The Dynneson Ranch's involvement in the Sidney community highlights the important role that family-owned agricultural operations play in supporting local organizations, events, and initiatives. Their commitment to engaging the public and promoting agricultural education aligns with the Chamber's mission to celebrate and strengthen the region's agricultural roots.

The details

The Dynneson family, including Keith and Tammy Dynneson and their daughters Katelyn Dynneson Larson and Alexis Dynneson-Prevost, operate a 3,000-head custom feedlot and 500-head cow-calf operation just outside of Sidney. They raise Gelbvieh, Hereford, and Angus cattle, as well as grow crops like corn, barley, wheat, and hay. In addition to their ranch work, the Dynnesons are actively involved in the local community, serving on the Chamber's Ag Committee and Board, hosting the annual Keith Steinbeisser Memorial Livestock Judging event, and providing the hay bale art displays around Sidney each fall.

  • The Dynneson Ranch was honored at the Sidney Chamber of Commerce & Agriculture Banquet and 110th-Anniversary Celebration on January 19, 2026.
  • The annual Keith Steinbeisser Memorial Livestock Judging event hosted by the Dynneson Ranch takes place each fall.

The players

Dynneson Ranch

A family-owned agricultural operation that includes a 3,000-head custom feedlot and 500-head cow-calf operation, as well as crop production, located just outside of Sidney, Montana.

Keith Dynneson

The patriarch of the Dynneson family, who operates the ranch along with his wife Tammy and their two daughters. He has served as president of the Chamber's Ag Committee and on the Chamber Board.

Tammy Dynneson

The wife of Keith Dynneson and co-operator of the Dynneson Ranch.

Katelyn Dynneson Larson

The daughter of Keith and Tammy Dynneson, who works on the family ranch with her husband Russel Larson and their children Connor and Cora.

Alexis Dynneson-Prevost

The daughter of Keith and Tammy Dynneson, who works on the family ranch with her husband Trent Prevost and their children Paysen and Styer.

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What they’re saying

“Being involved with the Chamber and community gives them the opportunity to ensure it continues to flourish and the people in it have something to do locally.”

— Keith Dynneson (roundupweb.com)

“He enjoys visiting with anyone who attends the livestock judging or other local happenings and says being able to give back to the community is its own reward.”

— Keith Dynneson (roundupweb.com)

What’s next

The Dynneson family plans to continue their involvement in the Sidney Chamber of Commerce and their annual Keith Steinbeisser Memorial Livestock Judging event.

The takeaway

The Dynneson Ranch's recognition by the Sidney Chamber of Commerce highlights the vital role that family-owned agricultural operations play in supporting their local communities through active engagement, event hosting, and a commitment to agricultural education and outreach.