Liatroim · Connacht
Leitrim was the western half of the kingdom of Bréifne, the country of the O'Rourkes of Dromahair, whose lion is still on the county shield. When Bréifne split in the 13th century, the O'Rourkes kept the west — West Breifne, now Leitrim — and the O'Reillys the east. The Normans pushed into south Leitrim in the 13th century and were beaten at Áth an Chip in 1270.
| Province | Connacht |
|---|---|
| County town | Carrick-on-Shannon |
| Population | 35,199 (2022) |
| Area (km²) | 1,589 |
| Population change in the Famine, 1841–51 | -28% |
| Daily Irish speakers | 309 (2022) |
| Highest point (m) | 631 — Truskmore SE Cairn |
| Townlands | 1,489 |
| Baronies | 5 |
| Civil parishes | 17 |
| Recorded monuments | 2,305 |
| Ringforts | 981 |
| Holy wells | 42 |
| Historic buildings recorded | 391 |
| Castles on the site | 3 |
| Battles and sieges | 1 |
| Workhouses | 3 |
| Railway stations (with an article) | 2 |
| Towns on the site | 4 |
| Surnames on the site | 16 |
Every figure is from a page on myireland.ie that names its source — see https://myireland.ie/counties/leitrim/. Printed from myireland.ie, the atlas of Irish history.