Town comparison · Blanchardstown vs Castleknock

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Blanchardstown or Castleknock?

Both towns measured at town level, not the wider Eircode area, on the same 52 figures: prices, schools, amenities, social life, commute, affluence and safety.

Blanchardstown, Co. Dublin City · D15 · 38,288 people | Castleknock, Co. Dublin City · D15 · 3,716 people

Blanchardstown is the stronger town on the data. It leads on 3 of the 7 dimensions to Castleknock’s 2, with 2 level.

Blanchardstown leads on
schools & amenitiespublic transportaffordability
Castleknock leads on
affluenceeducation levels
28168

Blanchardstown aheadlevel or not comparableCastleknock ahead

AffluenceEducationAmenitiesTransportSafetyAffordabilityCity access
BlanchardstownCastleknock
iBoth towns sit in the same Eircode area D15 — on the routing-key area page they would read as one number. At town level they diverge. Each figure below is tagged with the geographic level it’s actually measured at. The town ahead on a row is the one in green. Scores and percentages are charted against a true 0 to 100 scale; every other row is charted against the larger of the two towns, so the bars compare but don’t imply a ceiling.
!Blanchardstown & Castleknock are city suburbs — its boundary follows the postal area (the Small Areas whose addresses carry the name), not an official settlement line, so it can run broader than the local core and the figures cover that wider postal patch.

Outlines are each town’s CSO Small Areas — the exact footprint every figure is measured over.

Blanchardstown
Castleknock

Size

TOWN · census

Resident population at the 2022 CSO census, summed over the Small Areas that make up each town. Not scored: a bigger town isn’t a better one, it just explains why the counts below differ.

38,288
Population
3,716

Prices & market

TOWN · exact
€369k
Median sale pricelower is better
€540k
Blanchardstown leads
€310k – €443k
Typical range (P25–P75)
€433k – €744k
565
Sales (24m)
631
+5.9%
Price momentum (YoY)
+1.5%
1.6%
New-build share
17.7%

Schools, health & amenities

TOWN · counts

Facilities in and around each town — each counted once, for the town it’s closest to. Bigger towns naturally score higher — read alongside population.

21 prim · 6 sec
Schools
7 prim · 3 sec
Blanchardstown leads
Blanchardstown · 27 schools (largest first)
Hartstown Community School Secondary
1,124 pupils · 75% to 3rd-level · INTER DENOMINATIONAL
Coláiste Pobail Setanta Secondary
1,069 pupils · 75% to 3rd-level · MULTI DENOMINATIONAL
Scoil Phobail Chuil Mhin Secondary
1,013 pupils · 75% to 3rd-level · INTER DENOMINATIONAL
Le Cheile Secondary School Secondary
959 pupils · 75% to 3rd-level · CATHOLIC
Blakestown Community School Secondary
521 pupils · 45% to 3rd-level · INTER DENOMINATIONALDEIS
Rath Dara Community College Secondary
297 pupils · 35% to 3rd-level · INTER DENOMINATIONALDEIS
S N Naomh Mochta Primary
835 pupils · Catholic
Sacred Heart N S Primary
661 pupils · Catholic
St Benedicts National School Primary
622 pupils · Catholic
Scoil Ghrainne Community National School Primary
576 pupils · Multi Denominational
St Ciarans N S Primary
554 pupils · Catholic
Scoil Naomh Lucais Primary
517 pupils · Catholic
Tyrrelstown Educate Together National School Primary
482 pupils · Multi Denominational
Ladyswell N S Primary
434 pupils · CatholicDEIS
Mary Mother Of Hope Senior Ns Primary
429 pupils · Catholic
Castaheany Educate Together Ns Primary
401 pupils · Multi DenominationalDEIS
Mary Mother Of Hope Junior National School Primary
378 pupils · Catholic
Gaelscoil An Chuilinn Primary
281 pupils · Inter Denominational
Sn Oilibheir Primary
264 pupils · Catholic
Scoil Mhuire Sin Primary
233 pupils · CatholicDEIS
Scoil Bride C Primary
231 pupils · Catholic
St Philips Senior N S Primary
229 pupils · CatholicDEIS
Scoil Bride B Primary
209 pupils · Catholic
St Patricks Senior School Primary
205 pupils · CatholicDEIS
St Philip The Apostle Junior N S Primary
201 pupils · CatholicDEIS
Scoil Nais Mhuire Sois Primary
183 pupils · CatholicDEIS
St. Patrick's Junior Ns Primary
174 pupils · CatholicDEIS
Castleknock · 10 schools (largest first)
Castleknock Community College Secondary
1,290 pupils · 75% to 3rd-level · MULTI DENOMINATIONAL
Luttrellstown Community College Secondary
998 pupils · 75% to 3rd-level · MULTI DENOMINATIONAL
Edmund Rice College Secondary
813 pupils · 75% to 3rd-level · CATHOLIC
St Patricks Ns Primary
891 pupils · Catholic
St Brigids Mxd N S Primary
878 pupils · Catholic
Scoil Thomais Primary
640 pupils · Catholic
Castleknock Educate Together Ns Primary
409 pupils · Multi Denominational
St Francis Xavier J N S Primary
388 pupils · Catholic
St Francis Xavier Senior N S Primary
376 pupils · Catholic
Scoil Naisunta Chnuacha Primary
199 pupils · Church Of Ireland
81
Creches
20
Blanchardstown leads
7
GP practices
3
Blanchardstown leads
11
Pharmacies
8
Blanchardstown leads
2
Hospitals
0
Blanchardstown leads
218
Bus stops
42
Blanchardstown leads
1
Rail / Luas stops
1
20
Gyms & leisure
5
Blanchardstown leads
46
Parks & playgrounds
6
Blanchardstown leads
121
Sports pitches
66
Blanchardstown leads

Social life

TOWN · counts

Places to eat, drink and go out in and around each town — each counted once, for the town it’s closest to. The residents per venue row is the fairer read — raw counts just track town size, so a big town wins by being big.

41
Restaurants
8
Blanchardstown leads
19
Cafés
5
Blanchardstown leads
15
Pubs & bars
10
Blanchardstown leads
28
Takeaways
9
Blanchardstown leads
0
Nightclubs
0
3
Cinema & theatre
0
Blanchardstown leads
361
Residents per venuelower is better
116
Castleknock leads

Blanchardstown is a large town and Castleknock is a small town, so their national rankings aren’t like-for-like — each is ranked only against places of its own size. Compare them on the residents-per-venue row instead.

Day-to-day

TOWN · counts

The errands you run without thinking about them. Same caveat — read the residents-per-service row alongside the counts.

18
Supermarkets
4
Blanchardstown leads
16
Convenience shops
4
Blanchardstown leads
3
Bakery, butcher & greengrocer
1
Blanchardstown leads
6
Banks
0
Blanchardstown leads
3
Post offices
2
Blanchardstown leads
9
Hairdressers
3
Blanchardstown leads
4
Dentists
4
1
Vets
1
10
Filling stations
1
Blanchardstown leads
11
EV charging
5
Blanchardstown leads
15
Library & community centre
2
Blanchardstown leads
399
Residents per shop or servicelower is better
138
Castleknock leads

Commute by car

TOWN · from centre

Drive time from the town centre to each city centre — typical off-peak, with an estimated weekday rush hour. OSRM road routing.

19m · ~40 rush
Dublinlower is better
17m · ~35 rush
Castleknock leads
116m · ~130 rush
Waterfordlower is better
118m · ~130 rush
Blanchardstown leads
137m · ~155 rush
Limericklower is better
139m · ~155 rush
Blanchardstown leads
142m · ~165 rush
Galwaylower is better
144m · ~170 rush
Blanchardstown leads
176m · ~200 rush
Corklower is better
178m · ~200 rush
Blanchardstown leads

Affluence & profile

ELECTORAL DIVISION
-3.5
Affluence (Pobal HP)
6.8
Castleknock leads
Blanchardstown · 24 EDs, poorest → richest
-16Blanchardstown-corduffDisadvantaged
-14Blanchardstown-corduffDisadvantaged
-13Blanchardstown-tyrrelstownDisadvantaged
-12Blanchardstown-tyrrelstownDisadvantaged
-8Blanchardstown-mulhuddartDisadvantaged
-7Blanchardstown-coolmineBelow average
-6Blanchardstown-coolmineBelow average
-6Blanchardstown-mulhuddartBelow average
-2Blanchardstown-roselawnBelow average
-2Blanchardstown-roselawnBelow average
-1Blanchardstown-blakestownBelow average
0Blanchardstown-delwoodBelow average
+0Blanchardstown-delwoodAbove average
+0Blanchardstown-abbotstownAbove average
+1The WardAbove average
+1Blanchardstown-blakestownAbove average
+2Blanchardstown-abbotstownAbove average
+3The WardAbove average
+8Castleknock-knockmaroonAffluent
+9Castleknock-knockmaroonAffluent
+9Castleknock-parkAffluent
+10Mansion House BAffluent
+10Castleknock-parkAffluent
+17Mansion House BVery affluent
Castleknock · 8 EDs, poorest → richest
-7Blanchardstown-coolmineBelow average
-6Blanchardstown-coolmineBelow average
0Blanchardstown-delwoodBelow average
+0Blanchardstown-delwoodAbove average
+8Castleknock-knockmaroonAffluent
+9Castleknock-knockmaroonAffluent
+9Castleknock-parkAffluent
+10Castleknock-parkAffluent
39.7%
Third-level educated
60.1%
Castleknock leads
33.8%
Professional class
56.0%
Castleknock leads
12.7%
Unemploymentlower is better
7.1%
Castleknock leads
58.9%
Owner-occupier
71.7%
Castleknock leads
25.7%
Private rental
24.4%
13.4%
Social housing (LA)
3.1%

Liveability & safety

AREA · D15 / D15

Wider-area figures, not the town. Quality of life & rank are for the whole Eircode area each town sits in (BlanchardstownD15, CastleknockD15); safety & crime are the DMR West Garda division — so they read identically for both towns.

66/100
Quality of Life
66/100

Quality of Life is the equal-weighted average of these seven 0–100 dimensions, scored for the whole Eircode routing area (D15 / D15) from official data — Garda crime, CSO income & census, OPW flood, EPA water, and transport/healthcare/broadband coverage. Refreshed quarterly. The dashed line is each town’s overall score (that average) — dimensions to its right beat the average, to its left fall short. Two towns can share a score with a very different mix.

BlanchardstownCastleknockOverall (avg)
Safety66486648
Affordability6666
Infrastructure100100
Family6060
Education6363
Environment6969
Economic5353
020406080100020406080100
#35
National rank
#35
#10
County rank
#10
48/100
Safety
48/100
79.6
Crime / 1,000
79.6

Affluence range

Pobal HP deprivation index, published per Electoral Division, so the spread shows the town’s poorest to richest ED. A town that is a single ED shows one mark, no range.

Blanchardstown Below average-3.5
← more deprivednational avg · 0more affluent →
Spread across the town: Blanchardstown-corduff -16 (least affluent) → Mansion House B +17 (most affluent). It straddles the national average.
Castleknock Affluent+6.8
← more deprivednational avg · 0more affluent →
Spread across the town: Blanchardstown-coolmine -7 (least affluent) → Castleknock-park +10 (most affluent). It straddles the national average.

How accurate is this, and at what level?

TOWN
Prices, amenities and commute are exact and town-specific.

Prices come from individual PPR sales inside the town’s Small-Area boundary; schools, GPs, transport, gyms and parks are counted the same way; commute is routed from the town centre.

ED
Affluence, profile and tenure are Electoral-Division level.

Published per Electoral Division and averaged across the town’s EDs, with a range where the town spans several.

AREA
Liveability and safety are wider-area, not the town.

Quality of life and rank are per Eircode routing key; safety and crime are the Garda division (DMR West), coarser than a town, so two towns in the same county read the same.

Population growth isn’t shown: the 2016 and 2022 censuses don’t use the same Small Areas, and the areas that were re-cut are the ones that grew, so a like-for-like comparison understates growth badly. Rent and yield are still too sparse to show per town. Built from 135 CSO Small Areas.

Homes for sale in Blanchardstown

The stronger town on the data.

Compare somewhere else

Put any two Irish towns head to head, or step up to the wider Eircode areas.