Castlemartyr has a population of 1,277, making it the 303rd largest place we list in Ireland. It is in Munster.
Castlemartyr holds under a tenth of one per cent of Ireland's 5,356,950 people. Dublin, the largest place we list there, is 802 times its size.
1,277
population
#303
in Ireland
The population, measured on the census's boundary
| What you mean | Population | Source |
|---|---|---|
| Castlemartyr the CSO Built Up Area: the continuously built-up town | 1,603 | Census 2022 |
| Castlemartyr (GeoNames record) the figure in this page's heading; boundary unstated | 1,277 | GeoNames |
The census figure is the CSO's Census 2022 count for the Built Up Area, the boundary the CSO itself reports town populations on (data: CSO and Tailte Éireann, CC BY 4.0). Where the rows disagree, quote the census.
Castlemartyr is in Munster, which has 167 recorded places.
Nearby in size
| Place | Region | Population |
|---|---|---|
| Dromiskin | Leinster | 1,292 |
| Kilbeggan | Leinster | 1,288 |
| Kilpedder | Leinster | 1,287 |
| Ramelton | Ulster | 1,266 |
| Claregalway | Connacht | 1,248 |
| Killybegs | Ulster | 1,236 |
All places in Ireland → · Munster →
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.