Buffalo County Government

Gann Valley is the county seat of Buffalo County, as well as the center of population of South Dakota. Buffalo County Population: 1,962 (2019 census estimate)

The Buffalo County Courthouse is the headquarters of local government for the public. Auditor, Treasurer, Register of Deeds, Director of Equalization, and Sheriff offices are located in this building. Monthly meetings and other public events are conducted in the courtroom on the first Tuesday each month.

Auditor & Register of Deeds

Contact: Debra Morrison

Address: 112 Osman Ave., PO Box 146, Gann Valley, SD 57341

Phone: (605) 293-3217 | Fax: (605) 293-3240 | Email: buffalo.aud@midstatesd.net

Clerk of Courts

Address: 300 S. Courtland St., Ste. 111, Chamberlain, SD 57325

Phone: (605) 734-4580 | Fax: (605) 734-4582

Commissioners

Lloyd Lutter, Chair | Phone: (605) 293-3229

Dawn Cable | Phone: (605) 894-4464

Donita Loudner | Phone: (605) 245-2947 | Email: donita_loudner@yahoo.com

Director of Equalization & 911 Coordinator

Contact: TBD

Address: 112 Osman Ave., PO Box 175, Gann Valley, SD 57341

Phone: (605) 293-3286 | Fax: (605) 293-3240

Emergency Manager

Contact: Katheryn Benton

Address: 300 S. Courtland St., Ste. 106, Chamberlain, SD 57325

Phone: (605) 234-3433 | Email: brbufem@midstatesd.net

Highway Department

Contact: Lowell Swanson

Address: PO Box 136, Gann Valley, SD 57341

Phone: (605) 293-3263 | Fax: (605) 293-3240 | Email: buffcohighway@midstatesd.net

Sheriff

Contact: Wayne Willman

Address: 112 Osman Ave., PO Box 115, Gann Valley, SD 57341

Phone: (605) 293-3231 | Fax: (605) 293-3240 | Email: buffalocoso@midstatesd.net

State's Attorney

Contact: David Larson

Address: PO Box 131, Chamberlain, SD 57325

Phone: (605) 234-2222 | Email: dlarson@larsonlawpc.com

Treasurer

Contact: Janice VonEye

Address: 112 Osman Ave., PO Box 165, Gann Valley, SD 57341

Phone: (605) 293-3236 | Fax: (605) 293-3240

Veterans Service Officer

Contact: Kevin Bowan

Phone: (605) 280-4306

Weed Supervisor

Contact: Lee Sinkie