| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Suamico | city | Wisconsin | United States | 44.63 | -88.04 | 830 | |
| Sugar Bush | city | Wisconsin | United States | 44.48 | -88.74 | 830 | |
| Sugar Bush | city | Wisconsin | United States | 44.50 | -87.79 | 843 | |
| Sugar Camp | city | Wisconsin | United States | 45.79 | -89.31 | 1669 | |
| Sugar Grove | city | Wisconsin | United States | 43.43 | -90.68 | 1200 | |
| Sugar Island | city | Wisconsin | United States | 43.23 | -88.58 | 892 | |
| Sullivan | city | Wisconsin | United States | 43.01 | -88.59 | 849 | |
| Summit Center | city | Wisconsin | United States | 43.06 | -88.48 | 862 | |
| Summit Corners | city | Wisconsin | United States | 43.08 | -88.47 | 892 | |
| Summit Lake | city | Wisconsin | United States | 45.38 | -89.19 | 1692 | |
| Sumner | city | Wisconsin | United States | 45.39 | -91.65 | 1112 | |
| Sun Prairie | city | Wisconsin | United States | 43.18 | -89.21 | 944 | |
| Sunburst | city | Wisconsin | United States | 43.18 | -89.29 | 997 | |
| Sunflower | city | Wisconsin | United States | 45.80 | -89.64 | 1669 | |
| Sunnyside | city | Wisconsin | United States | 46.60 | -92.06 | 830 | |
| Sunrise Bay | city | Wisconsin | United States | 44.16 | -88.44 | 830 | |
| Sunset | city | Wisconsin | United States | 45.00 | -89.49 | 1669 | |
| Sunset Beach | city | Wisconsin | United States | 44.06 | -88.33 | 830 | |
| Sunset Beach | city | Wisconsin | United States | 43.50 | -88.87 | 869 | |
| Sunset Point | city | Wisconsin | United States | 44.06 | -88.59 | 830 | |
| Sunset Point (historical) | city | Wisconsin | United States | 43.90 | -91.33 | 830 | |
| Superior | city | Wisconsin | United States | 46.72 | -92.10 | 830 | |
| Superior Village | city | Wisconsin | United States | 46.66 | -92.10 | 830 | |
| Suring | city | Wisconsin | United States | 45.00 | -88.37 | 843 | |
| Sussex | city | Wisconsin | United States | 43.13 | -88.22 | 902 | |
| Sutherland | city | Wisconsin | United States | 46.44 | -91.18 | 908 |