| Sarsfield Square, Athlone | €153,500 | 40 |
| Saunders Avenue, Ardmore Road | €325,991 | 7 |
| Saunders Avenue, Royal Canal | €323,789 | 11 |
| Saunders Court, Millmount | — | 5 |
| Saunders Court, Mullingar | €237,000 | 11 |
| Saunders View, Royal Canal | €440,485 | 5 |
| Shannon View, Cityquarter | — | 18 |
| Shannon Weir, Athlone | €200,000 | 17 |
| Shannon Weir, The Docks | — | 22 |
| Sheepstown, Delvin | — | 5 |
| Shermont Court, Tyrrellspass | — | 5 |
| Shermount Court, Tyrrellspass | — | 6 |
| Sherwood Park, Mullingar | €234,000 | 11 |
| Silver Quay, Athlone | €228,000 | 13 |
| Silver Quay, Northgate Street | — | 5 |
| Silverquay, Athlone | — | 5 |
| Silverquay, Northgate Street | €230,000 | 26 |
| Slí an Aifrinn, Athlone | €325,000 | 25 |
| Sli an Choiste, Monksland | — | 8 |
| Sliabh Rua, Ballymore Road | €260,000 | 14 |
| Sliabh Rua, Moate | €218,000 | 49 |
| Sliabh Rua, Woodhill | — | 12 |
| Slieveboy, Castlepollard | — | 6 |
| Springfield, Mullingar | €139,500 | 17 |
| Springfield Close, Mullingar | — | 5 |
| springfield cottages, mullingar | — | 6 |
| Springwell Court, Baylough | €355,258 | 11 |
| St Asicus Villas, Athlone | — | 5 |
| St Bridgets Terrace, Mullingar | €175,000 | 14 |
| St Brigids Terrace, Mullingar | €175,000 | 16 |
| St Etchens Court, Kinnegad | — | 11 |
| St Francis Terrace, Athlone | €192,500 | 17 |
| St Josephs Villas, Athlone | — | 14 |
| St Kierans Terrace, Athlone | — | 9 |
| St Marys Place, Athlone | — | 6 |
| St Marys Terrace, Athlone | €260,000 | 12 |
| St. Anne's Terrace, Athlone | €120,000 | 13 |
| St. Columbas Terrace, Athlone | — | 6 |
| St. Patrick's Terrace, Athlone | €155,000 | 12 |
| St. Paul's Terrace, Athlone | €125,000 | 16 |
| St. Peter's Terrace, Athlone | — | 8 |
| Stonebridge Park, Rochfortbridge | €234,500 | 32 |
| Stoneleigh, Ballymore | €230,000 | 15 |
| Stoneyford Park, Delvin | €259,000 | 20 |
| Strand Court, Strand St | — | 10 |
| Strand Street, Athlone | €160,000 | 9 |
| The Square, Kilbeggan | — | 5 |