Town comparison · Castleknock vs Sandymount

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Castleknock or Sandymount?

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.

Castleknock, Co. Dublin City · D15 · 3,716 people | Sandymount, Co. Dublin City · D04 · 2,816 people

Sandymount is the stronger town on the data. It leads on 4 of the 7 dimensions to Castleknock’s 2, with 1 level.

Castleknock leads on
schools & amenitiesaffordability
Sandymount leads on
affluenceeducation levelspublic transportsafety
201220

Castleknock aheadlevel or not comparableSandymount ahead

AffluenceEducationAmenitiesTransportSafetyAffordabilityCity access
CastleknockSandymount
iCastleknock sits in D15, Sandymount in D04. 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.
!Castleknock & Sandymount 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.

Castleknock
Sandymount

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.

3,716
Population
2,816

Prices & market

TOWN · exact
€540k
Median sale pricelower is better
€873k
Castleknock leads
€435k – €743k
Typical range (P25–P75)
€610k – €1288k
630
Sales (24m)
299
+1.0%
Price momentum (YoY)
+39.1%
17.6%
New-build share
10.7%

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.

7 prim · 3 sec
Schools
4 prim · 2 sec
Castleknock leads
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
Sandymount · 6 schools (largest first)
Sandymount Park Educate Together Secondary School Secondary
436 pupils · 65% to 3rd-level · MULTI DENOMINATIONAL
Marian College Secondary
305 pupils · 40% to 3rd-level · CATHOLICDEIS
Shellybanks Educate Together National School Primary
342 pupils · Multi Denominational
Scoil Mhuire Primary
277 pupils · Catholic
Star Of The Sea Primary
226 pupils · Catholic
Sn Paroiste Maitiu Nfa Primary
209 pupils · Church Of Ireland
20
Creches
13
Castleknock leads
3
GP practices
2
Castleknock leads
8
Pharmacies
4
Castleknock leads
0
Hospitals
0
42
Bus stops
45
Sandymount leads
1
Rail / Luas stops
3
Sandymount leads
5
Gyms & leisure
16
Sandymount leads
6
Parks & playgrounds
5
Castleknock leads
66
Sports pitches
35
Castleknock 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.

8
Restaurants
17
Sandymount leads
5
Cafés
12
Sandymount leads
10
Pubs & bars
11
Sandymount leads
9
Takeaways
8
Castleknock leads
0
Nightclubs
0
0
Cinema & theatre
0
116
Residents per venuelower is better
59
Sandymount leads

Day-to-day

TOWN · counts

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

4
Supermarkets
2
Castleknock leads
4
Convenience shops
5
Sandymount leads
1
Bakery, butcher & greengrocer
1
0
Banks
3
Sandymount leads
2
Post offices
0
Castleknock leads
3
Hairdressers
7
Sandymount leads
4
Dentists
2
Castleknock leads
1
Vets
1
1
Filling stations
2
Sandymount leads
5
EV charging
0
Castleknock leads
2
Library & community centre
4
Sandymount leads
138
Residents per shop or servicelower is better
104
Sandymount 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.

17m · ~35 rush
Dublinlower is better
9m · ~20 rush
Sandymount leads
118m · ~130 rush
Waterfordlower is better
122m · ~135 rush
Castleknock leads
139m · ~155 rush
Limericklower is better
144m · ~160 rush
Castleknock leads
144m · ~170 rush
Galwaylower is better
154m · ~180 rush
Castleknock leads
178m · ~200 rush
Corklower is better
183m · ~205 rush
Castleknock leads

Affluence & profile

ELECTORAL DIVISION
6.8
Affluence (Pobal HP)
10.3
Sandymount leads
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
Sandymount · 10 EDs, poorest → richest
-2Pembroke East ABelow average
-2Pembroke East ABelow average
+10Mansion House BAffluent
+10Pembroke East BAffluent
+11Pembroke East BAffluent
+11Pembroke East CAffluent
+12Pembroke East CVery affluent
+12Pembroke West BVery affluent
+13Pembroke West BVery affluent
+17Mansion House BVery affluent
60.1%
Third-level educated
74.8%
Sandymount leads
56.0%
Professional class
61.8%
Sandymount leads
7.1%
Unemploymentlower is better
5.3%
Sandymount leads
71.7%
Owner-occupier
53.5%
Castleknock leads
24.4%
Private rental
39.6%
3.1%
Social housing (LA)
3.3%

Liveability & safety

AREA · D15 / D04

Wider-area figures, not the town. Quality of life & rank are for the whole Eircode area each town sits in (CastleknockD15, SandymountD04); safety & crime are the DMR West Garda division.

66/100
Quality of Life
65/100
Castleknock leads

Quality of Life is the equal-weighted average of these seven 0–100 dimensions, scored for the whole Eircode routing area (D15 / D04) 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.

CastleknockSandymountOverall (avg)
Safety66486560
Affordability6615
Infrastructure100100
Family6038
Education6378
Environment6980
Economic5386
020406080100020406080100
#35
National ranklower is better
#50
Castleknock leads
#10
County ranklower is better
#13
Castleknock leads
48/100
Safety
60/100
Sandymount leads
79.6
Crime / 1,000lower is better
60.2
Sandymount leads

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.

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.
Sandymount Affluent+10.3
← more deprivednational avg · 0more affluent →
Spread across the town: Pembroke East A -2 (least affluent) → Mansion House B +17 (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 22 CSO Small Areas.

Homes for sale in Sandymount

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.