| School | Roll number | County | Total (latest year) |
|---|---|---|---|
| ST JOSEPHS CONVENT | 18178R | Longford | 541 |
| ST MATTHEWS MIXED N.S | 20128O | Longford | 372 |
| ST MARYS N.S. | 20124G | Longford | 353 |
| SCOIL MHUIRE N S | 19987J | Longford | 324 |
| S N NAOMH TREASA | 19279F | Longford | 309 |
| S N CNOC AN MHARCAIGH | 07518E | Longford | 286 |
| The Sacred Heart Primary NS | 20101R | Longford | 240 |
| STONEPARK N S | 14386E | Longford | 239 |
| SCOIL NAOMH MICHEAL | 00856M | Longford | 234 |
| St Emer's National School | 19753H | Longford | 219 |
| ST MARYS MIXED N S | 16665S | Longford | 213 |
| SAINT MELS | 19467G | Longford | 191 |
| SAMHTHANN N S | 17561L | Longford | 152 |
| S N NAOMH COLMCILLE | 19296F | Longford | 147 |
| FERMOYLE MIXED N S | 13320P | Longford | 119 |
| NAOMH DOMINIC N S | 15154L | Longford | 119 |
| ST PATRICKS NS LONGFORD | 19353O | Longford | 118 |
| COLEHILL MIXED N S | 14672F | Longford | 103 |
| S N MHUIRE | 18733T | Longford | 94 |
| Lanesborough Primary School | 18259R | Longford | 87 |
| S N AN LEANA MOR | 05115S | Longford | 70 |
| S N NAOMH MHUIRE | 19171I | Longford | 66 |
| ST PATRICKS | 19975C | Longford | 66 |
| NAOMH PADRAIG N S | 13752V | Longford | 60 |
| NAOMH GUASACHTA N S | 12736S | Longford | 51 |
| ST COLUMBAS MXD N S | 12813K | Longford | 50 |
| SCOIL MHUIRE | 17644P | Longford | 45 |
| KILLASONNA MIXED N S | 14300O | Longford | 43 |
| SCOIL BHRÍDE | 12136R | Longford | 43 |
| NAOMH EARNAIN N S | 18258P | Longford | 29 |
| ST BERNARDS MIXED N S | 15122V | Longford | 25 |
| CLOONTAGH MIXED N S | 14650S | Longford | 14 |