Castleknock, Co. Dublin scores 64/100 for quality of life, #24 of the 107 Irish areas BuyerIQ ranks, and its fundamentals are rated “declining”. The median home sells for €535,000 (most €434,416–€740,484), it scores 48/100 for safety (67.7 recorded crimes per 1,000 residents across its Garda division), 3,716 people live here. It's strongest on transport & services and environment.
Updated October 2026 · Property Price Register + 20+ official sources, refreshed daily
Above average today — the fundamentals are slipping behind the rest of the country.
These seven scores and the 64/100 are measured across the D15 Eircode area, not Castleknock alone — an area that takes in much of Dublin. A strong or weak pocket inside it can read very differently from the area average.
Ranked on quality of life alone — cost of living excluded, so the genuinely best areas rank top even though they cost more. Factor in price and Castleknock is #22 of 107 for value for money (most quality of life per euro).
The score is for the D15 Eircode area; the crime rate is recorded per Garda division (DMR West). Neither is measured for Castleknock on its own.
3,716 people.
Population is for Castleknock itself (Census 2022, Small-Area boundary).
Not ranked: a suburb’s boundary is a postal approximation, so its shops serve more people than are counted inside it.
Census profile and the affluence rating are Electoral Division figures — the CSO/Pobal area around Castleknock, which is why this unemployment rate can differ from the one behind the quality-of-life scores above (those are Eircode-area wide).
Castleknock, Co. Dublin, scores 64/100 on BuyerIQ's Quality of Life composite (cost of living excluded) — #24 of the 107 areas we rank. It's strongest on transport & services and environment.
The D15 Eircode area around Castleknock scores 48/100 on safety. Its Garda division, DMR West, records ~67.7 crimes per 1,000 residents (An Garda Síochána); there is no official figure for Castleknock on its own.
Castleknock is rated "affluent" on the Pobal HP Deprivation Index, averaging +6.8 across its Electoral Divisions, where 0 is the national average (range -7.4 to +10.2) (Pobal / CSO Census 2022).
The median sale price in Castleknock over the last 24 months was €535,000, with most sales between €434,416 and €740,484 (Property Price Register, rolling 24 months).
The median sale price in Castleknock over the last 24 months was €535,000, most between €434,416 and €740,484 (Property Price Register).
Castleknock is rated "Declining" — unemployment fell just 2 points — lagging the national fall, third-level education up only 4 points — behind the national rise, prices up 10.2%.
About 16% of homes sold in Castleknock in the last 24 months were new builds (Property Price Register).
16 planning applications were lodged within Castleknock in the last 12 months (181 on record) — measured per town, not just at county level.
Castleknock scores 61/100 for families and community.
Castleknock scores 62/100 for schools and education, with 10 schools in the area.
Castleknock is about 17 minutes by road from Dublin, with 1 rail stop nearby.
Sale prices from the Property Price Register (rolling 24 months). Quality of Life averages seven equal-weighted dimensions from 40+ metrics across 13 public datasets (CSO census + SAPS, Garda crime, SEAI, EPA, DES schools, GTFS). Population is CSO Census 2022; the “on the up” trajectory compares 2016→2022. Figures refresh daily · an area assessment, not advice on a specific property. Updated October 2026.