UpAlphabetical listing of Places in South Dakota
| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|
| Ideal | city | South Dakota | United States | 43.54 | -99.92 | 1899 | |
| Igloo | city | South Dakota | United States | 43.20 | -103.86 | 3772 | |
| Imlay | city | South Dakota | United States | 43.72 | -102.40 | 2604 | |
| Imogene | city | South Dakota | United States | 45.14 | -102.71 | 2588 | |
| Indian Hill Division | city | South Dakota | United States | 43.57 | -96.62 | 1669 | |
| Ingberg Tracts | city | South Dakota | United States | 43.56 | -96.65 | 1669 | |
| Interior | city | South Dakota | United States | 43.73 | -101.98 | 2509 | |
| Iona | city | South Dakota | United States | 43.54 | -99.42 | 1850 | |
| Ipswich | city | South Dakota | United States | 45.44 | -99.03 | 1669 | |
| Irene | city | South Dakota | United States | 43.08 | -97.16 | 1669 | |
| Iron Lightning | city | South Dakota | United States | 45.18 | -101.85 | 2509 | |
| Iroquois | city | South Dakota | United States | 44.37 | -97.85 | 1669 | |
| Isabel | city | South Dakota | United States | 45.39 | -101.43 | 2509 | |
| Ivanhoe (historical) | city | South Dakota | United States | 43.48 | -103.69 | 4284 | |
| Iversons Subdivision | city | South Dakota | United States | 43.53 | -96.64 | 1669 | |
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