Sully County Historical Society

09/01/2026

🗺️ Sully County’s history is calling—literally! 📞
Did you know you can unlock the hidden stories of our local landmarks using just your cell phone? Whether you are a lifelong resident or just driving through, the Sully County Historical Society invites you to explore our Talking Trail!
We have 10 interactive historical stops set up all across the county. At each location, simply scan the QR code on the sign or dial the phone number to listen to expert-led, self-guided audio tours that bring our past to life.📍
Just a few things you’ll discover:
Old Fort Sully: The history of the 1863 military post along the Missouri River.
Sully Lake: The lively stories of central South Dakota's very first artificial lake.
The Arikara Village at Little Bend: Tracing history back over 10,000 years.
Local Overviews: Rich stories of how the railroad shaped Agar and Onida.
Turn your next weekend drive into a historical scavenger hunt! It’s completely free, educational, and fun for the whole family.👉 Preview the route and listen to the stories from home here: https://www.talkingtrail.com/sullycounty-sd

Sully County, South Dakota, organized in 1883, is located in central South Dakota, thirty miles north from South Dakota's State Capital, Pierre. The county is named after General Alfred Sully, who built Fort Sully near the Missouri River. Sully County has two communities, Agar and Onida. Onida is th...

08/12/2026

Congratulations to our American Flag winners Rodney Mosiman and Deanna Sutton! Thanks to everyone who stopped by our booth at the Sully County Fair!

08/07/2026

Thank you to all who attended the patriotic sing-a-long and presentation by Dr. Michael Mullin at the fairgrounds on August 6th! Here is a link to the presentation for those who would like the information.

08/04/2026

Thanks to everyone who came out and supported our Kiddie Parade, Flag Raising and Lunch provided by the Sully County Historical Society to celebrate America 250 and the Sully County Fair!

06/30/2026

Thank you to Steve Potts for the excellent and informative Lewis & Clark in Sully County presentation on June 25th in Agar! Also, thank you to everyone who attended - it was a huge success because of you!

06/15/2026

We are sponsoring a coloring page to celebrate America’s 250th Anniversary. Return to the Sully County Auditor’s office for a prize!
Deadline to return is July 1st!
Coloring pages are available at the Sully Area Library and the Sully County Auditor’s Office. They are also available by email.

05/03/2026

Lew Robbennnolt shared with the Senior English class information about the history of Sully County and specifically the Arickara Indians. Thank you for sharing with us!

05/01/2026

04/06/2026

Fort Sully 1—or Old Fort Sully—was built by General Alfred Sully in 1863 on the east side of the Missouri River near Farm Island....Visit Sully County Talking Trails!

Talking Trail offers self-guided, expert-led tours that take guests beyond the line or two found on a sign by connecting them with an audio or video recording of the whole story. Whether it is history, heritage, or arts and culture, experience the story of communities with Talking Trail!

03/30/2026

The area around Okobojo had been surveyed several months before and several "squatters" had taken up residence prior to the official opening....Visit Sully County Talking Trails!

Talking Trail offers self-guided, expert-led tours that take guests beyond the line or two found on a sign by connecting them with an audio or video recording of the whole story. Whether it is history, heritage, or arts and culture, experience the story of communities with Talking Trail!