Flood risk · 10 September 2026 · data to 2026-09-20
The Irish towns where one home in ten sits in a mapped flood zone
Addris tests every sale on the Property Price Register against the OPW's flood maps. For each of the 303 largest towns and suburbs in Ireland, that gives one plain number: the share of homes inside a mapped high or very-high flood-risk zone. 22 towns have at least one home in ten inside a zone; 4 have one in five; 131 have none at all. Ballsbridge, Co. Dublin tops the list at 26%.
Towns and suburbs tested
303
200+ sampled homes each
One home in twenty or more
53
5% or more in a zone
One home in ten or more
22
10% or more
One in five or more
4
20% or more
No homes in a zone
131
0% — a dry sample
The 30 towns with the most homes in a flood zone
| # | Town | County | Homes in a zone | Homes tested | Median, 12 months |
|---|---|---|---|---|---|
| 1 | Ballsbridge | Dublin | 26% | 2,000 | €815,601 |
| 2 | Skibbereen | Cork | 22% | 638 | €280,000 |
| 3 | Carlingford | Louth | 21% | 391 | €330,000 |
| 4 | Templemore | Tipperary | 20% | 431 | €215,000 |
| 5 | Thomastown | Kilkenny | 19% | 520 | €352,423 |
| 6 | Mallow | Cork | 19% | 2,000 | €322,500 |
| 7 | Sandymount | Dublin | 17% | 2,000 | €829,750 |
| 8 | Arklow | Wicklow | 16% | 1,985 | €344,000 |
| 9 | Ballinasloe | Galway | 14% | 1,166 | €160,000 |
| 10 | Rathcormac | Cork | 13% | 410 | €374,450 |
| 11 | Naas | Kildare | 13% | 2,000 | €440,529 |
| 12 | Donnybrook | Dublin | 13% | 2,000 | €770,000 |
| 13 | Bandon | Cork | 12% | 1,291 | €339,604 |
| 14 | Clonakilty | Cork | 11% | 1,055 | €356,211 |
| 15 | Dublin 4 | Dublin | 11% | 2,000 | €700,000 |
| 16 | Donegal Town | Donegal | 11% | 598 | €247,500 |
| 17 | Dingle | Kerry | 11% | 609 | €392,500 |
| 18 | Schull | Cork | 10% | 319 | €405,000 |
| 19 | Killaloe | Clare | 10% | 558 | €335,000 |
| 20 | Bantry | Cork | 10% | 741 | €277,533 |
| 21 | Ringsend | Dublin | 10% | 2,000 | €542,500 |
| 22 | Straffan | Kildare | 10% | 578 | €537,150 |
| 23 | Drogheda | Louth | 10.0% | 2,000 | €340,000 |
| 24 | Midleton | Cork | 10.0% | 2,000 | €392,070 |
| 25 | Kilmainham | Dublin | 9.8% | 2,000 | €425,000 |
| 26 | Callan | Kilkenny | 9.5% | 557 | €307,075 |
| 27 | Boyle | Roscommon | 9.5% | 632 | €200,000 |
| 28 | Baltinglass | Wicklow | 8.8% | 363 | €272,000 |
| 29 | Tralee | Kerry | 8.8% | 2,000 | €295,000 |
| 30 | Cahir | Tipperary | 8.5% | 531 | €267,500 |
"Homes in a zone" is the share of a random sample of the town's register sales (up to 2,000, at least 200) whose location falls inside an OPW high or very-high probability flood zone. Each town links to its page, where the flood layer shows the streets.
By county
| County | Homes in a zone | Homes tested |
|---|---|---|
| County Roscommon | 4.7% | 1,000 |
| County Kerry | 3.9% | 1,000 |
| County Kilkenny | 3.7% | 886 |
| County Meath | 3.7% | 1,000 |
| County Leitrim | 3.6% | 1,000 |
| County Carlow | 2.8% | 1,000 |
| County Cork | 2.7% | 1,000 |
| County Kildare | 2.7% | 1,000 |
| County Westmeath | 2.3% | 852 |
| County Longford | 2.2% | 1,000 |
| County Limerick | 2.0% | 1,000 |
| County Galway | 1.9% | 1,000 |
| County Mayo | 1.9% | 1,000 |
| County Cavan | 1.4% | 839 |
| County Clare | 1.4% | 1,000 |
| County Donegal | 1.4% | 1,000 |
| County Tipperary | 1.3% | 1,000 |
| County Laois | 1.2% | 911 |
| County Waterford | 1.2% | 1,000 |
| County Wicklow | 1.2% | 1,000 |
| County Monaghan | 1.2% | 857 |
| County Louth | 1.0% | 1,000 |
| County Offaly | 1.0% | 1,000 |
| County Dublin | 0.9% | 1,000 |
| County Wexford | 0.9% | 1,000 |
| County Sligo | 0.2% | 917 |
County figures sample 1,000 homes across the whole county, so a county with one flood-prone town and many dry ones reads low — the town table is the one to use.
What it means for a buyer
A mapped zone is not a flood. It is the OPW's estimate that a place has at least a 1-in-100 chance of flooding in any year (high) or 1-in-10 (very high), from rivers or the sea. What it changes is practical: insurers use these maps, so a home inside a zone can be hard or expensive to insure, and a lender will ask. Before bidding on a house in any of the towns above, open its town page, turn on the flood layer, and look at the street — most of a "20 % town" is dry, and the map shows which part is not.
The Addris Score already prices this in: a town's risk sub-score falls with the share of homes in a zone, and a town over 8 % carries a red flag on its page.
Every town
All 303 towns and suburbs, most exposed first
| Town | County | Homes in a zone | Tested |
|---|---|---|---|
| Ballsbridge | Dublin | 26% | 2,000 |
| Skibbereen | Cork | 22% | 638 |
| Carlingford | Louth | 21% | 391 |
| Templemore | Tipperary | 20% | 431 |
| Thomastown | Kilkenny | 19% | 520 |
| Mallow | Cork | 19% | 2,000 |
| Sandymount | Dublin | 17% | 2,000 |
| Arklow | Wicklow | 16% | 1,985 |
| Ballinasloe | Galway | 14% | 1,166 |
| Rathcormac | Cork | 13% | 410 |
| Naas | Kildare | 13% | 2,000 |
| Donnybrook | Dublin | 13% | 2,000 |
| Bandon | Cork | 12% | 1,291 |
| Clonakilty | Cork | 11% | 1,055 |
| Dublin 4 | Dublin | 11% | 2,000 |
| Donegal Town | Donegal | 11% | 598 |
| Dingle | Kerry | 11% | 609 |
| Schull | Cork | 10% | 319 |
| Killaloe | Clare | 10% | 558 |
| Bantry | Cork | 10% | 741 |
| Ringsend | Dublin | 10% | 2,000 |
| Straffan | Kildare | 10% | 578 |
| Drogheda | Louth | 10.0% | 2,000 |
| Midleton | Cork | 10.0% | 2,000 |
| Kilmainham | Dublin | 9.8% | 2,000 |
| Callan | Kilkenny | 9.5% | 557 |
| Boyle | Roscommon | 9.5% | 632 |
| Baltinglass | Wicklow | 8.8% | 363 |
| Tralee | Kerry | 8.8% | 2,000 |
| Cahir | Tipperary | 8.5% | 531 |
| Ballymun | Dublin | 8.4% | 202 |
| Shannon | Clare | 8.2% | 1,279 |
| Abbeyside | Waterford | 7.6% | 1,319 |
| Milltown | Dublin | 7.3% | 2,000 |
| Rathmines | Dublin | 7.2% | 1,698 |
| Kilrush | Clare | 7.1% | 624 |
| Dungarvan | Waterford | 7.0% | 2,000 |
| Carrickmines | Dublin | 6.8% | 1,104 |
| Ballina | Tipperary | 6.6% | 866 |
| Glanmire | Cork | 6.5% | 949 |
| Clonskeagh | Dublin | 6.4% | 1,593 |
| Rialto | Dublin | 6.3% | 2,000 |
| Newcastle West | Limerick | 6.2% | 1,457 |
| Carrick On Shannon | Leitrim | 6.2% | 1,331 |
| Kimmage | Dublin | 5.8% | 1,716 |
| Rathfarnham | Dublin | 5.8% | 2,000 |
| Enniscorthy | Wexford | 5.7% | 2,000 |
| Buncrana | Donegal | 5.6% | 770 |
| Lifford | Donegal | 5.6% | 287 |
| Castleisland | Kerry | 5.4% | 485 |
| Kilcullen | Kildare | 5.3% | 852 |
| Listowel | Kerry | 5.2% | 929 |
| Navan | Meath | 5.0% | 2,000 |
| Ballyfermot | Dublin | 5.0% | 1,511 |
| Athlone | Westmeath | 4.6% | 2,000 |
| Ballina | Mayo | 4.5% | 1,808 |
| Drimnagh | Dublin | 4.5% | 493 |
| Mountrath | Laois | 4.4% | 339 |
| Kenmare | Kerry | 4.3% | 925 |
| Crumlin | Dublin | 4.3% | 1,881 |
| Carrick On Suir | Tipperary | 4.0% | 918 |
| Kinsale | Cork | 4.0% | 1,941 |
| Dublin 20 | Dublin | 3.7% | 2,000 |
| Dublin 8 | Dublin | 3.6% | 2,000 |
| Dunmanway | Cork | 3.5% | 402 |
| Birr | Offaly | 3.4% | 728 |
| Inchicore | Dublin | 3.4% | 2,000 |
| Ballisodare | Sligo | 3.1% | 413 |
| Duleek | Meath | 3.1% | 651 |
| Blessington | Wicklow | 3.0% | 1,117 |
| Dublin 12 | Dublin | 2.5% | 2,000 |
| Dublin 14 | Dublin | 2.5% | 2,000 |
| Clane | Kildare | 2.5% | 2,000 |
| Ballyconnell | Cavan | 2.3% | 475 |
| Annacotty | Limerick | 2.3% | 692 |
| Nenagh | Tipperary | 2.2% | 1,993 |
| Portarlington | Laois | 2.1% | 1,701 |
| Ennis | Clare | 2.0% | 2,000 |
| Dundalk | Louth | 1.9% | 2,000 |
| Dublin 6 | Dublin | 1.9% | 2,000 |
| Dublin 6W | Dublin | 1.9% | 2,000 |
| Oranmore | Galway | 1.9% | 1,655 |
| Carlow Town | Carlow | 1.8% | 2,000 |
| Youghal | Cork | 1.7% | 1,951 |
| Bunclody | Wexford | 1.7% | 288 |
| Sixmilebridge | Clare | 1.7% | 231 |
| Athy | Kildare | 1.7% | 2,000 |
| Bundoran | Donegal | 1.6% | 1,035 |
| Roscrea | Tipperary | 1.6% | 960 |
| Abbeyfeale | Limerick | 1.6% | 385 |
| New Ross | Wexford | 1.5% | 1,883 |
| Santry | Dublin | 1.3% | 756 |
| Dublin 10 | Dublin | 1.3% | 2,000 |
| Harolds Cross | Dublin | 1.3% | 2,000 |
| Killarney | Kerry | 1.3% | 2,000 |
| Leixlip | Kildare | 1.3% | 2,000 |
| Dunmore East | Waterford | 1.3% | 718 |
| Westport | Mayo | 1.2% | 1,658 |
| Lucan | Dublin | 1.2% | 2,000 |
| Maynooth | Kildare | 1.2% | 2,000 |
| Clonmel | Tipperary | 1.1% | 2,000 |
| Ballymote | Sligo | 1.1% | 534 |
| Thurles | Tipperary | 1.1% | 1,519 |
| Dublin 16 | Dublin | 1.0% | 2,000 |
| Dublin 18 | Dublin | 1.0% | 2,000 |
| Kanturk | Cork | 1.0% | 523 |
| Clifden | Galway | 0.9% | 436 |
| Celbridge | Kildare | 0.9% | 2,000 |
| Kilcock | Kildare | 0.9% | 2,000 |
| Dublin 24 | Dublin | 0.9% | 2,000 |
| Portlaoise | Laois | 0.8% | 2,000 |
| Clondalkin | Dublin | 0.8% | 1,397 |
| Newport | Tipperary | 0.8% | 383 |
| Coolock | Dublin | 0.8% | 1,410 |
| Tullow | Carlow | 0.8% | 1,026 |
| Letterkenny | Donegal | 0.8% | 2,000 |
| Belturbet | Cavan | 0.7% | 407 |
| Gort | Galway | 0.7% | 691 |
| Kilmallock | Limerick | 0.7% | 278 |
| Douglas | Cork | 0.7% | 1,133 |
| Greystones | Wicklow | 0.7% | 2,000 |
| Rathgar | Dublin | 0.7% | 2,000 |
| Dublin 17 | Dublin | 0.7% | 2,000 |
| Stranorlar | Donegal | 0.6% | 935 |
| Mountmellick | Laois | 0.6% | 470 |
| Stoneybatter | Dublin | 0.6% | 2,000 |
| Wicklow Town | Wicklow | 0.6% | 1,915 |
| Cherrywood | Dublin | 0.6% | 1,064 |
| Mornington | Meath | 0.5% | 2,000 |
| Newbridge | Kildare | 0.5% | 2,000 |
| Stillorgan | Dublin | 0.5% | 2,000 |
| Ballincollig | Cork | 0.5% | 1,360 |
| Cabinteely | Dublin | 0.5% | 1,569 |
| Termonfeckin | Louth | 0.5% | 435 |
| Dublin 7 | Dublin | 0.4% | 2,000 |
| Charleville | Cork | 0.4% | 705 |
| Macroom | Cork | 0.4% | 739 |
| Sallins | Kildare | 0.4% | 1,250 |
| Blackrock | Dublin | 0.4% | 1,836 |
| Killiney | Dublin | 0.4% | 797 |
| Balbriggan | Dublin | 0.4% | 2,000 |
| Dublin 22 | Dublin | 0.4% | 2,000 |
| Ashford | Wicklow | 0.3% | 602 |
| Templeogue | Dublin | 0.3% | 1,061 |
| Kilkee | Clare | 0.3% | 717 |
| Manorhamilton | Leitrim | 0.3% | 359 |
| Blackpool | Cork | 0.3% | 1,913 |
| Walkinstown | Dublin | 0.3% | 1,990 |
| Adamstown | Dublin | 0.3% | 2,000 |
| Balgriffin | Dublin | 0.2% | 1,690 |
| Trim | Meath | 0.2% | 1,989 |
| Leopardstown | Dublin | 0.2% | 1,061 |
| Athboy | Meath | 0.2% | 559 |
| Ballyhaunis | Mayo | 0.2% | 578 |
| Dublin 13 | Dublin | 0.1% | 2,000 |
| Newcastle | Galway | 0.1% | 791 |
| Rush | Dublin | 0.1% | 1,888 |
| Castlebar | Mayo | 0.1% | 2,000 |
| Dublin 5 | Dublin | 0.1% | 2,000 |
| Gorey | Wexford | 0.1% | 2,000 |
| Lusk Village | Dublin | 0.1% | 2,000 |
| Mullingar | Westmeath | 0.1% | 2,000 |
| Carrickmacross | Monaghan | 0.1% | 1,027 |
| Tallaght | Dublin | 0.1% | 1,209 |
| Fairview | Dublin | 0.1% | 1,454 |
| Tuam | Galway | 0.1% | 1,883 |
| Bray | Wicklow | 0.1% | 2,000 |
| Carrigaline | Cork | 0.1% | 2,000 |
| East Wall | Dublin | 0.1% | 2,000 |
| Malahide | Dublin | 0.1% | 2,000 |
| Portmarnock | Dublin | 0.1% | 2,000 |
| Swords | Dublin | 0.1% | 2,000 |
| Ardamine | Wexford | 0.0% | 1,375 |
| Ardee | Louth | 0.0% | 736 |
| Artane | Dublin | 0.0% | 1,749 |
| Ashbourne | Meath | 0.0% | 2,000 |
| Ashtown | Dublin | 0.0% | 1,697 |
| Athenry | Galway | 0.0% | 1,266 |
| Bailieborough | Cavan | 0.0% | 556 |
| Baldoyle | Dublin | 0.0% | 1,839 |
| Ballaghaderreen | Roscommon | 0.0% | 610 |
| Ballinrobe | Mayo | 0.0% | 547 |
| Ballinteer | Dublin | 0.0% | 1,892 |
| Ballycullen | Dublin | 0.0% | 2,000 |
| Ballyjamesduff | Cavan | 0.0% | 477 |
| Ballymahon | Longford | 0.0% | 525 |
| Ballyshannon | Donegal | 0.0% | 432 |
| Ballyvolane | Cork | 0.0% | 1,195 |
| Barna | Galway | 0.0% | 326 |
| Beaumont | Dublin | 0.0% | 2,000 |
| Bishopstown | Cork | 0.0% | 1,015 |
| Blackrock | Cork | 0.0% | 703 |
| Blackwater | Wexford | 0.0% | 536 |
| Blanchardstown | Dublin | 0.0% | 1,208 |
| Blarney | Cork | 0.0% | 623 |
| Booterstown | Dublin | 0.0% | 2,000 |
| Cabra | Dublin | 0.0% | 1,908 |
| Carrigtwohill | Cork | 0.0% | 1,151 |
| Cashel | Tipperary | 0.0% | 901 |
| Castleblayney | Monaghan | 0.0% | 687 |
| Castleknock | Dublin | 0.0% | 1,498 |
| Castlerea | Roscommon | 0.0% | 737 |
| Castletroy | Limerick | 0.0% | 626 |
| Churchtown | Dublin | 0.0% | 1,661 |
| Clara | Offaly | 0.0% | 514 |
| Claremorris | Mayo | 0.0% | 808 |
| Clonburris | Dublin | 0.0% | 634 |
| Clongriffin | Dublin | 0.0% | 2,000 |
| Clonsilla | Dublin | 0.0% | 1,930 |
| Clontarf | Dublin | 0.0% | 1,309 |
| Cloyne | Cork | 0.0% | 364 |
| Cobh | Cork | 0.0% | 2,000 |
| Collooney | Sligo | 0.0% | 469 |
| Cootehill | Cavan | 0.0% | 353 |
| Craughwell | Galway | 0.0% | 268 |
| Crosshaven | Cork | 0.0% | 804 |
| Dalkey | Dublin | 0.0% | 1,846 |
| Donabate | Dublin | 0.0% | 1,868 |
| Donaghmede | Dublin | 0.0% | 1,375 |
| Dooradoyle | Limerick | 0.0% | 1,433 |
| Doughiska | Galway | 0.0% | 1,163 |
| Drumcondra | Dublin | 0.0% | 2,000 |
| Dublin 11 | Dublin | 0.0% | 2,000 |
| Dublin 15 | Dublin | 0.0% | 2,000 |
| Dublin 3 | Dublin | 0.0% | 2,000 |
| Dublin 9 | Dublin | 0.0% | 2,000 |
| Dun Laoghaire | Dublin | 0.0% | 2,000 |
| Dunboyne | Meath | 0.0% | 1,155 |
| Dundrum | Dublin | 0.0% | 2,000 |
| Dunleer | Louth | 0.0% | 274 |
| Dunshaughlin | Meath | 0.0% | 1,507 |
| Edenderry | Offaly | 0.0% | 1,091 |
| Edgeworthstown | Longford | 0.0% | 477 |
| Enfield | Meath | 0.0% | 694 |
| Enniskerry | Wicklow | 0.0% | 418 |
| Fermoy | Cork | 0.0% | 945 |
| Ferns | Wexford | 0.0% | 243 |
| Finglas | Dublin | 0.0% | 1,545 |
| Finglas West | Dublin | 0.0% | 1,426 |
| Firhouse | Dublin | 0.0% | 1,290 |
| Foxford | Mayo | 0.0% | 413 |
| Foxrock | Dublin | 0.0% | 1,322 |
| Glasnevin | Dublin | 0.0% | 1,322 |
| Glenageary | Dublin | 0.0% | 2,000 |
| Headford | Galway | 0.0% | 329 |
| Hollystown | Dublin | 0.0% | 1,227 |
| Honeypark | Dublin | 0.0% | 2,000 |
| Howth | Dublin | 0.0% | 495 |
| Kells | Meath | 0.0% | 1,000 |
| Kilcoole | Wicklow | 0.0% | 657 |
| Kildare Town | Kildare | 0.0% | 1,623 |
| Kill | Kildare | 0.0% | 715 |
| Killester | Dublin | 0.0% | 1,859 |
| Killorglin | Kerry | 0.0% | 507 |
| Killucan | Westmeath | 0.0% | 249 |
| Kingscourt | Cavan | 0.0% | 535 |
| Kinnegad | Westmeath | 0.0% | 437 |
| Kinsealy | Dublin | 0.0% | 1,288 |
| Knocklyon | Dublin | 0.0% | 1,250 |
| Knocknacarra | Galway | 0.0% | 1,906 |
| Loughrea | Galway | 0.0% | 1,447 |
| Marino | Dublin | 0.0% | 2,000 |
| Mitchelstown | Cork | 0.0% | 417 |
| Moate | Westmeath | 0.0% | 649 |
| Mohill | Leitrim | 0.0% | 308 |
| Monkstown | Dublin | 0.0% | 2,000 |
| Mount Merrion | Dublin | 0.0% | 2,000 |
| Mullagh | Cavan | 0.0% | 264 |
| Mungret | Limerick | 0.0% | 1,013 |
| Newcastle | Dublin | 0.0% | 1,206 |
| Newtownmountkennedy | Wicklow | 0.0% | 1,021 |
| Passage West | Cork | 0.0% | 1,196 |
| Phibsborough | Dublin | 0.0% | 2,000 |
| Raheen | Limerick | 0.0% | 1,133 |
| Raheny | Dublin | 0.0% | 789 |
| Rahoon | Galway | 0.0% | 1,452 |
| Ranelagh | Dublin | 0.0% | 2,000 |
| Rathangan | Kildare | 0.0% | 779 |
| Rathcoole | Dublin | 0.0% | 1,282 |
| Rathdrum | Wicklow | 0.0% | 632 |
| Rathnew | Wicklow | 0.0% | 1,013 |
| Ratoath | Meath | 0.0% | 1,269 |
| Renmore | Galway | 0.0% | 879 |
| Rochestown | Cork | 0.0% | 1,689 |
| Roscam | Galway | 0.0% | 988 |
| Saggart | Dublin | 0.0% | 926 |
| Salthill | Galway | 0.0% | 1,394 |
| Sandycove | Dublin | 0.0% | 1,617 |
| Shankill | Dublin | 0.0% | 1,303 |
| Skerries | Dublin | 0.0% | 2,000 |
| Stamullen | Meath | 0.0% | 594 |
| Strokestown | Roscommon | 0.0% | 326 |
| Sutton | Dublin | 0.0% | 249 |
| Swinford | Mayo | 0.0% | 336 |
| Terenure | Dublin | 0.0% | 1,917 |
| Tramore | Waterford | 0.0% | 2,000 |
| Tubbercurry | Sligo | 0.0% | 532 |
| Tullamore | Offaly | 0.0% | 2,000 |
| Tyrrelstown | Dublin | 0.0% | 1,439 |
| Virginia | Cavan | 0.0% | 874 |
| Waterville | Kerry | 0.0% | 294 |
| Whitehall | Dublin | 0.0% | 2,000 |
| Wilton | Cork | 0.0% | 1,095 |
Method and sources
- Homes: residential sales in the Property Price Register (PSRA) placed on the map by Eircode, street or locality — a random sample of up to 2,000 per town, drawn inside the town's box on the Addris map.
- Zones: the OPW's national flood maps (floodinfo.ie) — the high (1-in-100 a year) and very-high (1-in-10) probability extents for river and coastal flooding, 208,524 polygons.
- Not counted: pluvial (rainfall) flooding, groundwater, and any defence built after the maps were drawn; homes the register cannot place. Towns with fewer than 200 placed sales are left out rather than ranked on a thin sample.
- Reproducible: the same test runs for any area, and the figure is computed from the register as published. Data to 2026-09-20.
Quote freely with a link to this page. For the table as a spreadsheet, or the same test for any place, email hello@addris.ie.