BlackrockCo. Dublin City vs CastleknockCo. Dublin CityTown level

The same comparison as the area page, but measured for the town itself, not the whole Eircode routing key.

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iBlackrock sits in A94, Castleknock in D15. Each figure below is tagged with the geographic level it's actually measured at.
!Blackrock & 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.
Blackrock
Castleknock

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

TOWNS
Blackrock
Co. DUBLIN CITY · in A94 · pop · 22 small areas
Castleknock
Co. DUBLIN CITY · in D15 · pop · 12 small areas
Prices & market● TOWN · exact
Median sale price
€850k
€540k
Typical range (P25–P75)
€591k – €1200k
€427k – €751k
Sales (24m)
697
640
Price momentum (YoY)
+0.5%
+4.1%
New-build share
0.5%
1.4%
Schools, health & amenities● TOWN · counts
Count of each facility whose location falls inside the town boundary. Bigger towns naturally score higher — read alongside population.
Schools
0 prim · 1 sec
1 prim · 1 sec
Blackrock · 3 schools (largest first)
Loreto College Secondary
584 pupils · 90% to 3rd-level · CATHOLICFee-paying
Royal Irish Academy Of Music Third-level
enrolment n/a · college
Dublin Business School Third-level
enrolment n/a · private_college
Castleknock · 2 schools (largest first)
Castleknock Community College Secondary
1,290 pupils · 75% to 3rd-level · MULTI DENOMINATIONAL
St Patricks Ns Primary
891 pupils · Catholic
Creches
6
2
GP practices
7
1
Pharmacies
6
1
Hospitals
0
0
Bus stops
42
11
Rail / Luas stops
4
0
Gyms & leisure
13
1
Parks & playgrounds
5
4
Sports pitches
10
23
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.
Dublin
17m · ~35 rush
17m · ~35 rush
Waterford
123m · ~135 rush
118m · ~130 rush
Limerick
145m · ~165 rush
139m · ~155 rush
Galway
156m · ~180 rush
144m · ~170 rush
Cork
184m · ~205 rush
178m · ~200 rush
Affluence & profile● ELECTORAL DIVISION
Affluence (Pobal HP)
9.2
6.8
Blackrock · 9 EDs, poorest → richest
+5Blackrock-newparkAffluent
+7Blackrock-templehillAffluent
+9Foxrock-deansgrangeAffluent
+9Blackrock-carysfortAffluent
+10Stillorgan-prioryAffluent
+10Mansion House BAffluent
+10Blackrock-seapointAffluent
+10Blackrock-glenomenaAffluent
+12Blackrock-centralAffluent
Castleknock · 4 EDs, poorest → richest
-6Blanchardstown-coolmineBelow average
0Blanchardstown-delwoodBelow average
+9Castleknock-knockmaroonAffluent
+9Castleknock-parkAffluent
Third-level educated
74.7%
62.2%
Professional class
64.5%
56.5%
Unemployment
5.4%
6.3%
Owner-occupier
68.9%
71.7%
Private rental
25.1%
23.3%
Social housing (LA)
3.5%
3.2%
Liveability & safety● AREA · A94 / D15
Wider-area figures, not the town. Quality of life & rank are for the whole Eircode area each town sits in (BlackrockA94, CastleknockD15); safety & crime are the DMR East Garda division.
Quality of Life
72/100
66/100
National rank
#4
#35
County rank
#1
#10
Safety
71/100
48/100
Crime / 1,000
41.6
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.

Blackrock Affluent+9.2
← more deprivednational avg · 0more affluent →
Spread across the town: Blackrock-newpark +5 (least affluent) → Blackrock-central +12 (most affluent). Even its least-affluent neighbourhood is above the national average.
Castleknock Affluent+6.8
← more deprivednational avg · 0more affluent →
Spread across the town: Blanchardstown-coolmine -6 (least affluent) → Castleknock-park +9 (most affluent). It straddles the national average.

How accurate is this, and at what level?

● TOWN
Prices, amenities & commute — exact, 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. The figures the routing-key area page can't give you.

● ED
Affluence, profile & tenure — Electoral-Division level.

Pobal HP, third-level, class, unemployment, tenure are published per Electoral Division and averaged across the town's EDs — a range where the town spans several EDs (see the bar above).

● AREA
Liveability & safety — wider-area, not the town.

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

Population & growth are loaded for ~7 counties so far (not Leinster yet); rent & yield are too sparse per town. Tap Schools or Affluence to drill in. Built from 34 CSO Small Areas.
AffluenceEducationAmenitiesTransportSafetyAffordabilityCity access
BlackrockCastleknock
The verdict

Blackrock is the stronger town on the data — it leads on 5 of the 7 dimensions to Castleknock’s 1, with 1 level: affluence, education levels, schools & amenities, public transport and safety. Castleknock leads on affordability.

Higher is better on every spoke — affluence, education, amenity density, transport, safety, affordability and nearest-city access, scored head-to-head.

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