Castletown has a population of 1,195, making it the 312th largest place we list in Ireland. It is in Leinster.
Castletown holds under a tenth of one per cent of Ireland's 5,356,950 people. Dublin, the largest place we list there, is 857 times its size.
1,195
population
#312
in Ireland
Castletown is in Leinster, which has 256 recorded places.
Nearby in size
| Place | Region | Population |
|---|---|---|
| Kilkee | Munster | 1,214 |
| Rathdowney | Leinster | 1,208 |
| Moone | Leinster | 1,195 |
| Piltown | Leinster | 1,187 |
| Kentstown | Leinster | 1,179 |
| Athgarvan | Leinster | 1,176 |
All places in Ireland → · Leinster →
Figures are the latest available in GeoNames (CC BY 4.0), which draws on national censuses of varying dates — treat them as recent, not same-year. Country totals are UN World Population Prospects 2024 (medium variant) where the UN lists the country separately; the handful it reports under a parent state keep a GeoNames figure and are marked as such. Sources & method.