Lake County, South Dakota

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.

Proposed Agenda for the June 16th, 2026 County Commission Meeting.
06/12/2026

Proposed Agenda for the June 16th, 2026 County Commission Meeting.

Republican Runoff Election is set for July 28th! - Voter's will vote at their respective precincts. - Voting hours are f...
06/12/2026

Republican Runoff Election is set for July 28th!
- Voter's will vote at their respective precincts.
- Voting hours are from 7am - 7pm.
- Last day to make changes to your registration for the Republican Runoff is July 13th at 5 pm.
- ABSENTEE VOTING- has started June 12th and it runs until July 27th at 5:00pm. Voting hours are 8am - 5pm at the Lake County Court House.
- See sample ballot below.

06/03/2026
Lake County Commission Meeting Proposed Agenda- June 4th, 2026
06/01/2026

Lake County Commission Meeting Proposed Agenda- June 4th, 2026

County Commission Special Meeting 5/27/2026 Proposed Agenda
05/22/2026

County Commission Special Meeting 5/27/2026 Proposed Agenda

County Commission Meeting Proposed Agenda - May 19th, 2026
05/18/2026

County Commission Meeting Proposed Agenda - May 19th, 2026

County Commission Meeting Proposed Agenda - May 5th, 2026
05/01/2026

County Commission Meeting Proposed Agenda - May 5th, 2026

June 2026 Primary Election Ballots are now available! Absentee Voting is open from 8am-5pm, Monday-Friday.
04/27/2026

June 2026 Primary Election Ballots are now available! Absentee Voting is open from 8am-5pm, Monday-Friday.

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

Website

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