UpAlphabetical listing of Places in Missouri
| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
| Sibley | city | Missouri | United States | 39.18 | -94.19 | 830 | |
| Sidney | city | Missouri | United States | 40.35 | -92.82 | 977 | |
| Signal (historical) | city | Missouri | United States | 38.03 | -91.82 | 892 | |
| Sigsbee | city | Missouri | United States | 39.91 | -91.87 | 830 | |
| Sikeston | city | Missouri | United States | 36.88 | -89.59 | 328 | |
| Silex | city | Missouri | United States | 39.12 | -91.05 | 830 | |
| Silica | city | Missouri | United States | 38.23 | -90.43 | 403 | |
| Siloam Springs | city | Missouri | United States | 36.80 | -92.08 | 997 | |
| Siloam Springs | city | Missouri | United States | 40.37 | -94.26 | 921 | |
| Silva | city | Missouri | United States | 37.18 | -90.46 | 830 | |
| Silver Creek | city | Missouri | United States | 37.04 | -94.47 | 1062 | |
| Silver Lake | city | Missouri | United States | 37.68 | -89.99 | 830 | |
| Silver Springs | city | Missouri | United States | 38.00 | -90.52 | 895 | |
| Silverleaf | city | Missouri | United States | 39.90 | -93.62 | 830 | |
| Silverton | city | Missouri | United States | 36.82 | -92.57 | 1095 | |
| Simcoe | city | Missouri | United States | 36.72 | -94.17 | 1669 | |
| Simler | city | Missouri | United States | 40.12 | -92.70 | 830 | |
| Simmons | city | Missouri | United States | 37.23 | -92.02 | 1099 | |
| Simpson | city | Missouri | United States | 36.66 | -91.37 | 830 | |
| Simpson | city | Missouri | United States | 39.08 | -93.75 | 830 | |
| Sims (historical) | city | Missouri | United States | 36.55 | -90.51 | 298 | |
| Sims Point | city | Missouri | United States | 37.48 | -93.96 | 997 | |
| Sinkin (historical) | city | Missouri | United States | 37.41 | -91.41 | 1000 | |
| Sinsabaugh | city | Missouri | United States | 36.50 | -90.70 | 278 | |
| Sint-Louis | city | Missouri | United States | 38.63 | -90.20 | 416 | |
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