Johnstown has a population of 1,005, making it the 348th largest place we list in Ireland. It is in Leinster.
Johnstown holds under a tenth of one per cent of Ireland's 5,356,950 people. Dublin, the largest place we list there, is 1019 times its size.
1,005
population
#348
in Ireland
The population, measured on the census's boundary
| What you mean | Population | Source |
|---|---|---|
| Johnstown the CSO Built Up Area: the continuously built-up town | 1,320 | Census 2022 |
| Johnstown (GeoNames record) the figure in this page's heading; boundary unstated | 1,005 | 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.
Johnstown is in Leinster, which has 256 recorded places.
Nearby in size
| Place | Region | Population |
|---|---|---|
| Kilmacanoge | Leinster | 1,028 |
| Belmullet | Connacht | 1,019 |
| Toormakeady | Connacht | 1,007 |
| Kilmeage | Leinster | 997 |
| Fountainstown | Munster | 993 |
| Coolaney | Connacht | 990 |
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.