South Dakota has 66 counties and the list below is alphabetize by the county name. After the county name is the name of the city the courthouse is located in and then follows a link to that county courthouse website when it could be found.
This link shows a map of the counties. If you want to come back to this website NebraskaRoots click on the return arrow on the link’s page and you will be returned to this S. D. 66 Courthouse’s page http://geology.com/county-map/south-dakota.shtml
This link has the South Dakota county courthouses in photos. If you allow the cursor to remain on the photo it will then bring up the name / location of the photo in the lower left corner of the photo. If you want to come back to this website NebraskaRoots click on the return arrow on the link’s page and you will be returned to this S. D. 66 Courthouse’s page. https://www.flickr.com/photos/courthouselover/sets/72157606217461295/
Aurora Plankinton not directly courthouse
http://ujs.sd.gov/County_Information/Aurora.aspx
Beadle Huron
http://beadle.sdcounties.org/
Bennett Martin not directly courthouse but has information
http://ujs.sd.gov/County_Information/Bennett.aspx
Bon Homme Tyndall
http://www.bonhommecounty.org/countyseat.html
Brookings Brookings
http://www.brookingscountysd.gov/
Brown Aberdeen information on the county
http://www.brown.sd.us/
Brule Chamberlin
http://www.brulecounty.org/
Buffalo Gann Valley
http://www.gannvalley.com/BuffaloCounty/Index.html
Butte Belle Fourche
http://butte.sdcounties.org/
Campbell Mound City does not have an official site but this does have information
http://ujs.sd.gov/County_Information/Campbell.aspx
Charles Mix Lake Andes
http://charlesmix.sdcounties.org/
Clark Clark
http://www.clarksd.com/countygovernment.htm
Clay Vermillion
http://www.claycountysd.org/
Codington Watertown
http://codington.org/
Corson McIntosh
http://corson.sdcounties.org/
Custer Custer http://www.custercountysd.com/
another website for the courthouse http://custer.sdcounties.org/
Davison Mitchell
http://www.davisoncounty.org/
Day Webster
http://day.sdcounties.org/
Deuel Clear Lake
http://www.deuelcountysd.com/
Dewey Timber Lake
http://ujs.sd.gov/County_Information/Dewey.aspx
Douglas Armour not directly courthouse but has information
http://ujs.sd.gov/County_Information/Douglas.aspx
Edmunds Ipswich
http://edmunds.sdcounties.org/
Fall River Hot Springs
http://fallriver.sdcounties.org/
Faulk Faulton does not have an official site but this does have information
http://ujs.sd.gov/County_Information/faulk.aspx
Grant Milbank
http://www.grantcounty.sd.gov/
Gregory Burke not directly courthouse but has information
http://ujs.sd.gov/County_Information/gregory.aspx
Haakon Philip
http://haakon.sdcounties.org/
Hamlin Hayti
http://www.hamlincountysd.org/#!
Hand Miller
http://hand.sdcounties.org/
Hanson Alexandria
http://ujs.sd.gov/County_Information/Hanson.aspx
Harding Buffalo does not have an official site but this does have information
http://ujs.sd.gov/County_Information/harding.aspx
Hughes Pierre
http://www.hughescounty.org/index.asp
Hutchinson Olivet not official courthouse but has some information
http://ujs.sd.gov/County_Information/hutchinson.aspx
Hyde Highmore
http://www.highmoresd.govoffice3.com/index.asp?SEC=29411886-9424-4348-A752-B2280AA8FC8B&Type=B_BASIC
Jackson Kodoka not official courthouse but has some information
http://ujs.sd.gov/County_Information/jackson.aspx
Jerauld Wessington Springs not an official courthouse site but has some information
http://ujs.sd.gov/County_Information/jerauld.aspx
Jones Murdo not official courthouse site but has lots of information
http://www.murdosd.com/
another website on courthouse information
http://ujs.sd.gov/County_Information/jones.aspx
Kingsbury De Smet
http://www.kingsburycountysd.org/
Lake Madison
http://lakecountysd.com/
Lawrence Deadwood
http://www.lawrence.sd.us/courthou1.htm
another website on courthouse information http://www.lawrence.sd.us/index.htm
Lincoln Canton
http://www.lincolncountysd.org/
Lyman Kennebec
http://lymancounty.org/page.php?2
Marshall Britton does not have an official site but this has information
http://ujs.sd.gov/County_Information/marshall.aspx
McCook Salem
http://mccookcountysd.com/
McPherson Leola
http://mcpherson.sdcounties.org/
Meade Sturgis
http://www.meadecounty.org/
Mellette White River not directly courthouse but does have information
http://ujs.sd.gov/County_Information/mellette.aspx
Miner Howard
http://www.minercountysd.org/
Minnehaha Sioux Falls
http://minnehahacounty.org/index.php
Moody Flandreau
http://www.moodycounty.net/
Pennington Rapid City
http://www.pennco.org/
Perkins Bison
http://www.perkinscounty.org
Potter Gettsburg not directly courthouse but does have information
http://ujs.sd.gov/County_Information/potter.aspx
Roberts Sisseton
http://roberts.sdcounties.org/
Sanborn Woonsocket not directly courthouse
http://ujs.sd.gov/County_Information/Sanborn.aspx
Shannon administered by Fall River county
http://fallriver.sdcounties.org/
Spink Redfield
http://spinkcounty-sd.org/
Stanley Fort Pierre
http://www.stanleycounty.org/
Sully Onida
http://www.sullycounty.net/
Todd administered by Tripp county
Tripp Winner not directly courthouse but does have information
http://ujs.sd.gov/County_Information/Tripp.aspx
Turner Parker
http://turner.sdcounties.org/
Union Elk Point
http://unioncountysd.org/
Walworth Selby
http://walworthco.org/
Yankton Yankton
http://www.co.yankton.sd.us/
Ziebach Dupree does not have an official site but this has information
http://ujs.sd.gov/County_Information/Ziebach.aspx