Living in Castleknock, Co. Dublin: Schools, Commute & House Prices 2026
On this page
- Who lives in Castleknock
- Getting around and commuting
- Getting around Castleknock
- Schools in Castleknock
- Things to do in and around Castleknock
- Where Castleknock is
- What it costs: house prices and rent in Castleknock
- Before you move: planning and flood
- Recent development in Castleknock
- Flood maps
- County context
- Common questions about living in Castleknock
- Nearby Dublin towns
- Population and demographics
Is Castleknock a nice place to live?
Castleknock is home to about 6,929 households, 72% owner-occupied and 24% renting, according to Census 2022. The median sale price over the last 12 months was €615,000, versus €500,000 across the Dublin region, and the median rent is €2,192 a month. The Department of Education dataset lists 5 schools keyed to the town (3 primary, 2 post-primary), and there are 516 visitor attractions within 10 km. The nearest rail station is Castleknock, 1.1 km away, and 11 bus and rail routes serve the town. The sections below break each of these down.
Castleknock is a town in Co. Dublin, about 14 minutes from Dublin city centre by car and on the rail line, 5 schools, 71.9% of households own their home. Living here costs a median €615,000 to buy or €2,192 a month to rent (a 4.3% gross yield).
Official CSO, Department of Education, Transport for Ireland, PPR & RTB data · 224 sales · updated July 2026
Who lives in Castleknock: 71.9% own their home, full Census breakdown
Who lives in Castleknock
20,967 people live in Castleknock on Census 2022 night. 72% of households own their home and 24% rent, so Castleknock leans towards owner occupiers. The most common way to commute is by car (52%). It skews young: 22% are under 15 against 11% aged 65 and over. 64% of those who have finished education hold a third level qualification.
| Measure | Figure |
|---|---|
| Population (2022) | 20,967 |
| Owner-occupied households | 72% |
| Rented households | 24% |
| Aged under 15 | 22% |
| Aged 25 to 44 | 30% |
| Aged 65 and over | 11% |
| Third level or higher | 64% |
| At work (aged 15+) | 63% |
| Unemployment rate | 3% |
| Commute by car | 52% |
| Commute by public transport | 20% |
| Commute on foot or bike | 26% |
Source: CSO Census 2022 Small Area Population Statistics, CC-BY 4.0. Figures are for the Castleknock-Knockmaroon electoral division around Castleknock.
Getting around and commuting
Nearest train station: Castleknock (in the town), on the Maynooth line
Public transport serving Castleknock: 3 operators
Getting around Castleknock
Castleknock is served by 3 public-transport operators running 11 scheduled routes. Operators are Bus Átha Cliath – Dublin Bus, Express Bus and Nitelink, Dublin Bus.
| Operator | Mode |
|---|---|
| Bus Átha Cliath – Dublin Bus | Bus / coach |
| Express Bus | Bus / coach |
| Nitelink, Dublin Bus | Bus / coach |
Scheduled routes
- 37 - Blanchardstown Shopping Centre - Wilton Terrace
- 38 - Damastown - Burlington Road
- 39 - Ongar - Burlington Rd
- 70 - Dunboyne - Burlington Rd
- 38A - Damastown via Navan Rd - Burlington Rd
- 38B - Damastown via Ballycoolin Ind Est - Burlington Rd
- 38D - IBM Damastown via N3 - Burlington Rd
- 39A - Ongar - UCD Belfield
- 39X - Ongar - Burlington Road
- 70n - Westmoreland Street - Tyrrelstown
- 870 - O'Connell Street Upper - Damastown IBM
Source: Transport for Ireland GTFS_All feed (NTA), CC-BY 4.0. Stops matched to the town within a 6 km radius; route list capped.
Schools in Castleknock
There are 3 primary and 2 post-primary schools in and around Castleknock.
| School | Level | Pupils | DEIS |
|---|---|---|---|
| St Brigids Mxd N S | Primary | 834 | |
| Edmund Rice College | Post-primary | 813 | |
| Castleknock College | Post-primary | 775 | |
| Castleknock Educate Together Ns | Primary | 374 | |
| Scoil Naisunta Chnuacha | Primary | 198 |
Source: Department of Education, Data on Individual Schools. CC-BY 4.0.
Things to do in and around Castleknock
- Heritage nearby: Kilmainham Gaol (5 km) · St. Audoens Church, Dublin City (7 km) · St. Mary's Abbey Abbey, Dublin City (7 km) · Casino Marino, Dublin City (9 km)
- Walking trails in County Dublin: Wicklow Way · Barnaslingan - Pine loop trail (Blue) · Barnaslingan - Scalp Lookout Trail (Red) · Carrickgollogan - Lead Mines Way - (Orange)
- Nature reserves: Wicklow Mountains National Park · North Bull Island Nature Reserve · Rogerstown Estuary Nature Reserve
Where Castleknock is
Map © OpenStreetMap contributors
What it costs: house prices and rent in Castleknock
| Measure | Value |
|---|---|
| Median sale price (12 mo) | €615,000 (+16.2% YoY) |
| Average monthly rent | €2,192 |
| Gross rental yield | 4.3% |
| Net yield (est.) | 3.3% |
| Dublin county median | €500k |
| New build / second-hand | €712,525 / €607,250 |
What this means: New builds in Castleknock sell at about a 17% premium to second-hand homes (€712,525 vs €607,250).
Recent sales in Castleknock
| Date | Address | Type | Price |
|---|---|---|---|
| 01 Jul 26 | 32 DEERPARK RD, CASTLEKNOCK, DUBLIN 15 | Second-hand | €1,480,000 |
| 26 Jun 26 | 51 WARREN AVE, CASTLEKNOCK, DUBLIN 15 | Second-hand | €505,000 |
| 25 Jun 26 | 31 LUTTRELLSTOWN GROVE, CASTLEKNOCK, DUBLIN 15 | Second-hand | €475,000 |
| 22 Jun 26 | 40 WOODBROOK CRESCENT, CASTLEKNOCK, DUBLIN 15 | Second-hand | €380,000 |
| 17 Jun 26 | 30 ANNFIELD DRIVRE, CASTLEKNOCK, DUBLIN 15 | Second-hand | €375,000 |
| 17 Jun 26 | 8 COLLEGEFORT, CASTLEKNOCK, DUBLIN 15 | Second-hand | €435,000 |
| 10 Jun 26 | 50 GLENESKY SQ, PHOENIX PARK RACECOURSE, CASTLEKNOCK | Second-hand | €482,000 |
| 08 Jun 26 | APT 13 CLONBERN, PHOENIX PARK RACECOURSE, CASTLEKNOCK | Second-hand | €496,000 |
Actual sale prices from the Property Price Register, verifiable at propertypriceregister.ie.
Castleknock median price, year by year
| Year | Median | Relative | Sales |
|---|---|---|---|
| 2023 | €535,000 | 227 sales | |
| 2024 | €506,075 | 250 sales | |
| 2025 | €596,000 | 242 sales | |
| 2026 | €585,000 | 104 sales |
Average rent by size
| 1-bed | 2-bed | 3-bed | 4+ bed |
|---|---|---|---|
| — | €2,034 | €2,326 | €2,913 |
Maximum legal rent increase in Castleknock
Since 1 March 2026 a rent review is capped at the lower of 2% a year (pro rata) or CPI inflation.
The full March 2026 rent review rules
Castleknock compared with County Dublin
| County | Median | Relative |
|---|---|---|
| Castleknock | 615000 | |
| County Dublin median | 500000 |
Rent or buy in Castleknock?
At a glance: €615,000 to buy versus €2,192 a month to rent, a 4.3% gross yield.
Local Property Tax in Castleknock
The median home (€615,000) falls in LPT Band 5, a base charge of €523 a year before Dublin County Council's local adjustment factor. Use the calculator for your exact valuation.
Renting in Castleknock: the March 2026 rent rules
Every rent increase is now capped at the lesser of 2% a year (pro rata) or CPI inflation, nationwide since 1 March 2026. A review needs 90 days' notice on the RTB form, no more than one in any 12 months, and the notice must cite three comparable homes from the RTB Rent Register. Check any rent increase against the legal cap, or see average rents for every Leinster town.
Before you move: planning and flood
Recent development in Castleknock
In the 12 months to July 2026, 36 planning grants were recorded in and around Castleknock.
| Decided | Development | Homes |
|---|---|---|
| 2026-05-26 | Planning permission for attic conversion with hip to gable roof to bot | |
| 2026-05-12 | a single storey detached garden room containing a playroom and home gy | |
| 2026-05-12 | The development consists of Alterations to the previously granted plan | |
| 2026-05-07 | A 3 year Temporary Planning Permission for the installation of an outd | |
| 2026-04-30 | planning permission for the extension and alteration of our house at n |
Source: Irish Planning Applications, Department of Housing, Local Government and Heritage (ArcGIS, CC-BY 4.0). Granted applications keyed to the nearest town within 7 km. Homes column shows residential units in the application where recorded.
Flood maps
For the modelled fluvial, coastal and pluvial flood extents around Castleknock, open the official OPW flood maps, the authoritative source for Castleknock, Dublin.
View the official OPW flood maps for Castleknock →
Source: Office of Public Works, floodinfo.ie. No OPW flood-extent values are reproduced here.
County context
| Measure | Figure |
|---|---|
| Population (2022 Census) | 1,458,154 |
| Population change 2016 to 2022 | +8.2% |
| Disposable income per person (index, State = 100) | 116.6 |
| New dwelling permissions (Dublin region, 2017) | 848 thousand m² |
Planning permissions are reported at NUTS3 region level; counties in this region share a figure.
Sources: CSO F1001, CIA02, BHQ09. CC-BY 4.0.
Nearby Dublin towns
Dartry · Mount Merrion · Sandycove · Glenageary · Rathgar · Dalkey
All Dublin house prices · All Leinster house prices
Sources: CSO Census 2022, Department of Education, Transport for Ireland, Property Price Register (PSRA), CSO RPPI, RTB via CSO. CC-BY. Figures verifiable at the official source.
Common questions about living in Castleknock
What's it like to live in Castleknock?
Castleknock is a town in Co. Dublin, about 14 minutes from Dublin city centre by car and on the rail line, 5 schools, 71.9% of households own their home (CSO Census 2022, Department of Education, Transport for Ireland).
How much does it cost to live in Castleknock?
A home in Castleknock costs a median €615,000 to buy or €2,192 a month to rent, a 4.3% gross yield (Property Price Register, RTB via CSO).
How long is the commute from Castleknock to Dublin?
About 14 minutes to Dublin city centre by car and on the rail line (OpenStreetMap routing).
What schools are in Castleknock?
Schools in Castleknock include St Brigids Mxd N S, Edmund Rice College, Castleknock College, Castleknock Educate Together Ns, among 3 primary and 2 post-primary in total (Department of Education, 2024/25).
What is the population of Castleknock?
Castleknock had a population of 20,967 at the 2022 Census (CSO).
Population and demographics
Castleknock had a population of 20,967 at the 2022 Census.
| Population (2022 Census) | 20,967 |
|---|---|
| Households | 6,929 |
| Owner-occupied homes | 72% |
| Rented homes | 24% |
Source: CSO Census 2022 (CC BY 4.0). Household tenure from the same release.
Shortlist is full (max 3 towns). View your shortlist to remove a town first.
Median of open-market sales each year (Property Price Register). Latest year is partial.
Could a home in Castleknock pay as a buy-to-let?
Pre-filled with Castleknock's median price and average rent. Change any figure and it recalculates instantly.
Illustrative. Assumes ~18% of rent for management, insurance and voids; 25-year mortgage on the borrowed share; ~4% acquisition costs. Not financial advice.
What can you afford to buy in Castleknock?
Pre-filled with Castleknock's median price. Adjust the income and deposit and it recalculates instantly.
Central Bank rules: 3.5x gross income for most buyers; first-time buyers can borrow up to 90% LTV. Figures are illustrative, not financial advice.
Stamp duty on a Castleknock property
Pre-filled with Castleknock's median price. Change the purchase price and see your stamp duty and total cost instantly.
Irish residential stamp duty: 1% on the first €1,000,000; 2% on any amount above. Figures are illustrative, not legal or financial advice.
Local Property Tax for a Castleknock home
Pre-filled with Castleknock's median price. Uses the 2026 Revenue valuation bands (valuation date: 1 November 2025).
Revenue LPT 2026-2030 band table (source: revenue.ie). Your local authority can vary the base charge by up to 15%. Figures are illustrative; verify at Revenue's LPT reckoner for your exact property.
Rent cap calculator for Castleknock
Pre-filled with Castleknock's median rent. From 1 March 2026 all private tenancies in Ireland are covered by national rent control: the annual increase is capped at 2% or CPI inflation, whichever is lower.
Residential Tenancies (Amendment) Act 2025; national rent control from 1 March 2026 (source: rtb.ie). RPZ_CAP_PCT = 2.0% per annum -- flagged for Bryan to verify the exact statutory rate before publishing. Figures are illustrative, not legal advice.
What a month in Castleknock costs
Real figures for Castleknock: RTB average rent and an ownership estimate built on the median sale price. Adjust the mortgage rate and deposit and it recalculates instantly.
Average rent by size: 2 bed €2,034 · 3 bed €2,326 · 4+ bed €2,913
Rent: RTB average monthly rents (RIQ02). Ownership: repayment mortgage on Castleknock's median Property Price Register sale price over 30 years, plus Revenue's 2026 LPT band charge divided by 12. Excludes utilities, insurance, management fees and council LPT adjustments. Illustrative, not financial advice.
See the full Castleknock house prices page: median, year trend, rents by bedroom, yields and recent sales.
Visiting first? Things to do in Castleknock covers attractions, heritage sites and walks nearby.