UpAlphabetical listing of Places in Monaghan
| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
| Scairbh na gCaorach | city | Monaghan | Ireland | 54.34 | -6.96 | 144 | 2890 |
| Scarnageeragh | city | Monaghan | Ireland | 54.34 | -6.96 | 144 | 2890 |
| Scotch Corner | city | Monaghan | Ireland | 54.18 | -6.87 | 830 | 2236 |
| Scotshouse | city | Monaghan | Ireland | 54.12 | -7.25 | 255 | 1962 |
| Scotstown | city | Monaghan | Ireland | 54.28 | -7.07 | 249 | 2877 |
| Selloo | city | Monaghan | Ireland | 54.25 | -7.13 | 249 | 2063 |
| Shanco | city | Monaghan | Ireland | 54.00 | -6.84 | 830 | 1779 |
| Shanco | city | Monaghan | Ireland | 54.36 | -6.97 | 95 | 2856 |
| Shanmullagh | city | Monaghan | Ireland | 54.19 | -6.90 | 830 | 2622 |
| Shantonagh | city | Monaghan | Ireland | 54.05 | -6.85 | 830 | 1730 |
| Sheetrim | city | Monaghan | Ireland | 54.10 | -6.79 | 830 | 3583 |
| Sheskin | city | Monaghan | Ireland | 54.29 | -7.12 | 1003 | 1750 |
| Slieveroe | city | Monaghan | Ireland | 54.18 | -7.00 | 830 | 3135 |
| Smithborough | city | Monaghan | Ireland | 54.22 | -7.09 | 242 | 2782 |
| Stone Bridge | city | Monaghan | Ireland | 54.20 | -7.17 | 239 | 2440 |
| Swans Cross Roads | city | Monaghan | Ireland | 54.15 | -7.01 | 830 | 1588 |
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