Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Township of Savo | Civil | 429 | Brown | 45 53 43 N | 098 24 51 W |
| Township of Scandinavia | Civil | 552 | Deuel | 44 35 15 N | 096 33 41 W |
| Township of Scatterwood (historical) | Civil | 419 | Faulk | 45 11 37 N | 098 46 08 W |
| Township of Scenic | Civil | 884 | Pennington | 43 48 53 N | 102 32 48 W |
| Township of Schley | Civil | 520 | Campbell | 45 44 45 N | 099 59 46 W |
| Township of Schriever | Civil | 565 | Gregory | 43 07 06 N | 098 59 31 W |
| Township of Scissons (historical) | Civil | 557 | Gregory | 43 17 31 N | 099 06 35 W |
| Township of Scotch Cap | Civil | 851 | Perkins | 45 31 05 N | 102 38 41 W |
| Township of Scotland | Civil | 407 | Bon Homme | 43 07 35 N | 097 41 46 W |
| Township of Scotland | Civil | 550 | Day | 45 16 35 N | 097 54 33 W |
| Township of Scotland (historical) | Civil | 422 | Bon Homme | 43 06 17 N | 097 45 16 W |
| Township of Scovil | Civil | 652 | Jones | 43 56 40 N | 100 52 29 W |
| Township of Scranton | Civil | 552 | Walworth | 45 16 57 N | 100 13 59 W |
| Township of Seim | Civil | 713 | Perkins | 45 48 00 N | 102 17 22 W |
| Township of Seneca | Civil | 577 | Faulk | 45 01 15 N | 099 30 06 W |
| Township of Shaner | Civil | 591 | Stanley | 44 28 00 N | 100 43 17 W |
| Township of Shank (historical) | Civil | 447 | Turner | 43 28 03 N | 097 02 02 W |
| Township of Sharon | Civil | 405 | Hutchinson | 43 17 32 N | 097 48 23 W |
| Township of Sharon (historical) | Civil | 438 | Hutchinson | 43 14 53 N | 097 55 24 W |
| Township of Shelby | Civil | 397 | Brown | 45 42 45 N | 098 11 47 W |
| Township of Sheldon | Civil | 677 | Haakon | 44 07 05 N | 101 34 36 W |
| Township of Sheridan | Civil | 521 | Codington | 44 50 15 N | 097 03 46 W |
| Township of Sherman | Civil | 570 | Brookings | 44 24 45 N | 096 35 01 W |
| Township of Sherman | Civil | 544 | Campbell | 45 44 40 N | 099 56 01 W |
| Township of Sherman | Civil | 712 | Corson | 45 47 00 N | 101 47 31 W |
| Township of Sherman | Civil | 573 | Faulk | 45 11 43 N | 099 30 06 W |
| Township of Shue Creek (historical) | Civil | 405 | Beadle | 44 31 30 N | 098 02 01 W |
| Township of Shyne | Civil | 737 | Pennington | 44 07 05 N | 102 25 02 W |
| Township of Sidney | Civil | 815 | Perkins | 45 43 30 N | 102 47 42 W |
| Township of Signal | Civil | 430 | Charles Mix | 43 15 20 N | 098 53 01 W |
| Township of Silver Creek | Civil | 384 | Sanborn | 44 03 53 N | 098 09 02 W |
| Township of Silver Lake | Civil | 436 | Hutchinson | 43 27 56 N | 097 27 02 W |
| Township of Silver Lake (historical) | Civil | 435 | Hutchinson | 43 27 55 N | 097 30 38 W |
| Township of Sioux | Civil | 585 | Lyman | 43 46 28 N | 100 16 46 W |
| Township of Sioux Falls | Civil | 425 | Minnehaha | 43 32 14 N | 096 42 04 W |
| Township of Sioux Valley | Civil | 380 | Union | 42 53 45 N | 096 35 31 W |
| Township of Sisseton | Civil | 536 | Marshall | 45 37 32 N | 097 39 33 W |
| Township of Sisseton | Civil | 365 | Roberts | 45 41 47 N | 097 03 04 W |
| Township of Slim Butte | Civil | 1072 | Fall River | 43 04 44 N | 103 09 34 W |
| Township of Slim Buttes (historical) | Civil | 1032 | Harding | 45 25 21 N | 103 11 11 W |
| Township of Smith | Civil | 517 | Brule | 43 42 51 N | 099 05 34 W |
| Township of Smithville | Civil | 700 | Meade | 44 13 13 N | 102 25 47 W |
| Township of Smithwick | Civil | 976 | Fall River | 43 20 23 N | 103 09 16 W |
| Township of Snake Butte (historical) | Civil | 589 | Hughes | 44 18 58 N | 099 42 51 W |
| Township of Soft Water (historical) | Civil | 851 | Meade | 44 43 38 N | 102 53 16 W |
| Township of South Creek | Civil | 642 | Jones | 44 01 53 N | 100 58 36 W |
| Township of South Detroit | Civil | 393 | Brown | 45 43 10 N | 098 02 28 W |
| Township of South Forest City | Civil | 564 | Potter | 44 56 06 N | 100 21 31 W |
| Township of South Riverside | Civil | 573 | Potter | 45 06 30 N | 100 14 08 W |
| Township of Southwest (historical) | Civil | 410 | Brown | 45 19 48 N | 098 39 34 W |
| Township of Spink | Civil | 425 | Union | 42 54 00 N | 096 43 16 W |
| Township of Spirit Lake | Civil | 532 | Kingsbury | 44 29 30 N | 097 34 57 W |
| Township of Spirit Mound | Civil | 372 | Clay | 42 50 00 N | 096 57 31 W |
| Township of Split Rock | Civil | 410 | Minnehaha | 43 32 09 N | 096 34 52 W |
| Township of Spring | Civil | 499 | Hand | 44 50 45 N | 099 07 08 W |
| Township of Spring | Civil | 549 | McPherson | 45 43 23 N | 099 02 06 W |
| Township of Spring | Civil | 415 | Spink | 44 55 44 N | 098 02 01 W |
| Township of Spring Creek | Civil | 580 | McPherson | 45 53 50 N | 099 39 21 W |
| Township of Spring Creek | Civil | 494 | Moody | 44 08 45 N | 096 34 44 W |
| Township of Spring Grove | Civil | 565 | Roberts | 45 26 10 N | 097 03 05 W |
| Township of Spring Hill | Civil | 578 | Hand | 44 24 23 N | 099 14 09 W |
| Township of Spring Lake | Civil | 576 | Hand | 44 14 00 N | 098 52 24 W |
| Township of Spring Lake | Civil | 413 | Hanson | 43 49 40 N | 097 40 46 W |
| Township of Spring Lake | Civil | 561 | Hyde | 44 45 30 N | 099 36 14 W |
| Township of Spring Lake | Civil | 540 | Kingsbury | 44 15 40 N | 097 13 14 W |
| Township of Spring Lake | Civil | 607 | Walworth | 45 27 24 N | 099 45 33 W |
| Township of Spring Valley | Civil | 559 | Clark | 45 05 30 N | 097 48 06 W |
| Township of Spring Valley | Civil | 644 | Gregory | 43 01 53 N | 099 13 38 W |
| Township of Spring Valley | Civil | 456 | McCook | 43 34 00 N | 097 11 16 W |
| Township of Spring Valley | Civil | 423 | Turner | 43 12 22 N | 097 12 37 W |
| Township of Spring Valley | Civil | 640 | Walworth | 45 26 31 N | 099 54 13 W |
| Township of Springdale | Civil | 436 | Lincoln | 43 28 05 N | 096 40 44 W |
| Township of Springdale | Civil | 413 | Roberts | 45 22 34 N | 096 56 03 W |
| Township of Springfield | Civil | 423 | Bon Homme | 42 52 22 N | 097 55 17 W |
| Township of Springfield (historical) | Civil | 417 | Bon Homme | 42 53 40 N | 097 55 16 W |
| Township of Springvale | Civil | 592 | Campbell | 45 48 40 N | 100 17 11 W |
| Township of Star | Civil | 413 | Clay | 43 02 30 N | 097 05 01 W |
| Township of Star Prairie | Civil | 735 | Tripp | 43 13 13 N | 100 03 26 W |
| Township of Star Valley | Civil | 567 | Gregory | 43 01 54 N | 098 45 17 W |
| Township of Star Valley | Civil | 533 | Tripp | 43 38 15 N | 099 54 41 W |
| Township of Starr | Civil | 432 | Hutchinson | 43 26 56 N | 098 02 46 W |
| Township of Stena | Civil | 398 | Marshall | 45 47 56 N | 097 54 24 W |
| Township of Sterling | Civil | 501 | Brookings | 44 25 00 N | 096 50 01 W |
| Township of Stewart | Civil | 722 | Tripp | 43 07 57 N | 099 42 07 W |
| Township of Stickel | Civil | 614 | McPherson | 45 43 25 N | 099 31 56 W |
| Township of Stockholm | Civil | 513 | Grant | 45 05 54 N | 096 48 42 W |
| Township of Stony Butte | Civil | 604 | Lyman | 44 03 50 N | 100 18 21 W |
| Township of Stony Butte (historical) | Civil | 763 | Meade | 44 54 00 N | 102 09 24 W |
| Township of Strool | Civil | 862 | Perkins | 45 32 10 N | 102 46 47 W |
| Township of Sully | Civil | 582 | Tripp | 43 22 59 N | 099 35 17 W |
| Township of Sulpher (historical) | Civil | 824 | Meade | 44 54 02 N | 102 53 16 W |
| Township of Summit | Civil | 503 | Lake | 44 08 45 N | 096 56 19 W |
| Township of Summit | Civil | 624 | Roberts | 45 20 51 N | 097 03 04 W |
| Township of Summit | Civil | 543 | Sully | 44 35 05 N | 100 05 27 W |
| Township of Sumner | Civil | 395 | Spink | 45 01 00 N | 098 09 22 W |
| Township of Sumner (historical) | Civil | 406 | Spink | 45 01 00 N | 098 05 37 W |
| Township of Sun Prairie | Civil | 473 | McCook | 43 49 35 N | 097 25 46 W |
| Township of Sunnyside | Civil | 822 | Pennington | 44 12 17 N | 102 17 52 W |
| Township of Surprise Valley | Civil | 895 | Mellette | 43 28 30 N | 101 58 52 W |
| Township of Surrey | Civil | 634 | Walworth | 45 22 10 N | 100 00 25 W |
| Township of Susquehanna | Civil | 442 | Hutchinson | 43 22 37 N | 098 02 39 W |
| Township of Sverdrup | Civil | 466 | Minnehaha | 43 42 39 N | 096 42 03 W |
| Township of Swan Creek | Civil | 576 | Walworth | 45 17 50 N | 099 45 35 W |
| Township of Swan Lake | Civil | 385 | Turner | 43 12 23 N | 097 05 30 W |
| Township of Swan Lake | Civil | 579 | Walworth | 45 16 06 N | 099 53 01 W |
| Township of Sweet | Civil | 404 | Hutchinson | 43 12 17 N | 097 34 03 W |
| Township of Sylvia | Civil | 508 | Lyman | 43 42 38 N | 100 01 56 W |
| Township of Table Mountain | Civil | 992 | Harding | 45 53 07 N | 103 36 49 W |
| Township of Tabor | Civil | 412 | Bon Homme | 42 56 15 N | 097 41 08 W |
| Township of Tabor (historical) | Civil | 407 | Bon Homme | 42 58 29 N | 097 39 09 W |