South Dakota spans across multiple time zones. The majority of the state follows Chicago, while some areas observe Denver. This time zone division reflects the state's geographic extent and ensures that different regions maintain appropriate local times for their specific needs.
| County/City | Time Zone | Time Zone City | Current Time |
|---|---|---|---|
| Aberdeen | CT | Chicago | 22:36 |
| Aurora | CT | Chicago | 22:36 |
| Beadle | CT | Chicago | 22:36 |
| Bennett | MT | Denver | 21:36 |
| Bon Homme | CT | Chicago | 22:36 |
| Brookings | CT | Chicago | 22:36 |
| Brule | CT | Chicago | 22:36 |
| Buffalo | CT | Chicago | 22:36 |
| Butte | MT | Denver | 21:36 |
| Campbell | CT | Chicago | 22:36 |
| Chamberlain | CT | Chicago | 22:36 |
| Davison | CT | Chicago | 22:36 |
| Day | CT | Chicago | 22:36 |
| Deuel | CT | Chicago | 22:36 |
| Dewey | MT | Denver | 21:36 |
| Douglas | CT | Chicago | 22:36 |
| Edmunds | CT | Chicago | 22:36 |
| Haakon | MT | Denver | 21:36 |
| Hamlin | CT | Chicago | 22:36 |
| Hand | CT | Chicago | 22:36 |
| Hanson | CT | Chicago | 22:36 |
| Harding | MT | Denver | 21:36 |
| Hughes | CT | Chicago | 22:36 |
| Huron | CT | Chicago | 22:36 |
| Hutchinson | CT | Chicago | 22:36 |
| Lake | CT | Chicago | 22:36 |
| Lawrence | MT | Denver | 21:36 |
| Lincoln | CT | Chicago | 22:36 |
| Lyman | CT | Chicago | 22:36 |
| Madison | CT | Chicago | 22:36 |
| Marshall | CT | Chicago | 22:36 |
| Mccook | CT | Chicago | 22:36 |
| Mcpherson | CT | Chicago | 22:36 |
| Meade | MT | Denver | 21:36 |
| Mellette | CT | Chicago | 22:36 |
| Miner | CT | Chicago | 22:36 |
| Minnehaha | CT | Chicago | 22:36 |
| Mitchell | CT | Chicago | 22:36 |
| Mobridge | CT | Chicago | 22:36 |
| Moody | CT | Chicago | 22:36 |
| Pennington | MT | Denver | 21:36 |
| Perkins | MT | Denver | 21:36 |
| Pierre | CT | Chicago | 22:36 |
| Potter | CT | Chicago | 22:36 |
| Rapid City | MT | Denver | 21:36 |
| Roberts | CT | Chicago | 22:36 |
| Sanborn | CT | Chicago | 22:36 |
| Shannon | MT | Denver | 21:36 |
| Sioux Falls | CT | Chicago | 22:36 |
| Spearfish | MT | Denver | 21:36 |
| Spink | CT | Chicago | 22:36 |
| Stanley (east) | CT | Chicago | 22:36 |
| Stanley (west) | MT | Denver | 21:36 |
| Sully | CT | Chicago | 22:36 |
| Todd | CT | Chicago | 22:36 |
| Tripp | CT | Chicago | 22:36 |
| Turner | CT | Chicago | 22:36 |
| Union | CT | Chicago | 22:36 |
| Vermillion | CT | Chicago | 22:36 |
| Walworth | CT | Chicago | 22:36 |
| Watertown | CT | Chicago | 22:36 |
| Yankton | CT | Chicago | 22:36 |
| Ziebach | MT | Denver | 21:36 |