| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
| Sagafu | city | Ibaraki-ken | Japan | 35.9833333 | 139.95 | 65 | 82296 |
| Saigane | city | Ibaraki-ken | Japan | 36.7 | 140.3833333 | 282 | 59035 |
| Saikane | city | Ibaraki-ken | Japan | 36.7 | 140.3833333 | 282 | 59035 |
| Sakai | city | Ibaraki-ken | Japan | 36.1 | 139.8 | 32 | 80988 |
| Sakamoto | city | Ibaraki-ken | Japan | 36.5166667 | 140.6 | 226 | 47983 |
| Sanno | city | Ibaraki-ken | Japan | 35.9333333 | 140.0666667 | 32 | 67293 |
| Sannō | city | Ibaraki-ken | Japan | 35.9333333 | 140.0666667 | 32 | 67293 |
| Satogawa | city | Ibaraki-ken | Japan | 36.8166667 | 140.5333333 | 2296 | 44296 |
| Sekimoto | city | Ibaraki-ken | Japan | 36.25 | 139.9166667 | 98 | 59385 |
| Sekimoto-naka | city | Ibaraki-ken | Japan | 36.25 | 139.9166667 | 98 | 59385 |
| Sekiyado | city | Ibaraki-ken | Japan | 36.1 | 139.7833333 | 32 | 110228 |
| Sekiyadomachi | city | Ibaraki-ken | Japan | 36.1 | 139.7833333 | 32 | 110228 |
| Shari | city | Ibaraki-ken | Japan | 35.7666667 | 140.8 | 32 | 57567 |
| Shibajigu | city | Ibaraki-ken | Japan | 35.95 | 140.5166667 | 3 | 69975 |
| Shibajuku | city | Ibaraki-ken | Japan | 35.95 | 140.5166667 | 3 | 69975 |
| Shibasaki | city | Ibaraki-ken | Japan | 35.9 | 140.3 | 36 | 80592 |
| Shibashuku | city | Ibaraki-ken | Japan | 35.95 | 140.5166667 | 3 | 69975 |
| Shibazaki | city | Ibaraki-ken | Japan | 35.9 | 140.3 | 36 | 80592 |
| Shiku | city | Ibaraki-ken | Japan | 36.8166667 | 140.5333333 | 2296 | 44296 |
| Shimo-ishizaki | city | Ibaraki-ken | Japan | 36.2833333 | 140.5166667 | 16 | 53753 |
| Shimo-oguri | city | Ibaraki-ken | Japan | 36.35 | 140.0166667 | 147 | 52275 |
| Shimo-tsuma | city | Ibaraki-ken | Japan | 36.1833333 | 139.9666667 | 65 | 59417 |
| Shimodate | city | Ibaraki-ken | Japan | 36.3 | 139.9833333 | 98 | 57055 |
| Shiogasaki | city | Ibaraki-ken | Japan | 36.3333333 | 140.55 | 22 | 43081 |
| Shojiki | city | Ibaraki-ken | Japan | 35.95 | 140.2166667 | 62 | 59606 |
| Shuku | city | Ibaraki-ken | Japan | 36.7166667 | 140.3833333 | 318 | 59004 |
| Shuku | city | Ibaraki-ken | Japan | 36.8166667 | 140.5333333 | 2296 | 44296 |
| Shōjiki | city | Ibaraki-ken | Japan | 35.95 | 140.2166667 | 62 | 59606 |
| Simodate | city | Ibaraki-ken | Japan | 36.3 | 139.9833333 | 98 | 57055 |
| Sugaya | city | Ibaraki-ken | Japan | 36.45 | 140.5 | 118 | 59227 |
| Sugisaki | city | Ibaraki-ken | Japan | 36.3833333 | 140.35 | 147 | 59259 |
| Suwa | city | Ibaraki-ken | Japan | 36.5666667 | 140.6333333 | 104 | 36892 |
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