Lake County, South Dakota

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Lake County, South Dakota This is the official page for Lake County, South Dakota. and Winfred), and sixteen townships. The centrally located City of Madison is the county seat.

Lake County lies in the eastern portion of the State of South Dakota at the crossroads of United States Highway 81 and South Dakota Highway 34. The county is comprised of six incorporated (Madison, Nunda, Prairie Village, Ramona, Wentworth, and Brant Lake) and five unincorporated communities (Chester, Franklin, Junius, Rutland.

County Commission Meeting- Special Meeting- 11/6/2026
11/04/2026

County Commission Meeting- Special Meeting- 11/6/2026

County Commission Meeting 11/5/2026 Proposed Agenda
11/04/2026

County Commission Meeting 11/5/2026 Proposed Agenda

10/13/2026

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09/30/2026
09/22/2026

463rd Ave between 231st and 234th st will be closed until further notice.

Address

200 East Center Street
Madison, SD
57042

Opening Hours

Monday 8am - 5pm
Tuesday 8am - 5pm
Wednesday 8am - 5pm
Thursday 8am - 5pm
Friday 8am - 5pm

Telephone

+16052567600

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