Place CheckerOfficial local evidence

Census 2021 neighbourhood · W02000368

Thornhill

Thornhill is a Census neighbourhood of about 5,700 residents in Cardiff. This is a statistical area, not an administrative boundary or a postcode district.

Area evidence brief for Cardiff
5,700

Usual residents

ONS Census 2021 · MSOA

2,520

Households

ONS Census 2021 · MSOA

4,433.7

Residents per km²

ONS Census 2021 · MSOA

76.0%

Households owning their home

ONS Census 2021 · tenure

11.4%

Households with no car or van

ONS Census 2021 · car availability

46.7%

Adults with a degree or above

ONS Census 2021 · qualifications

Neighbourhoods most like this one

Closest matches elsewhere in England and Wales, across 14 Census themes. Similarity is statistical, not a recommendation, and says nothing about how anywhere feels to live in.

Battenhall & Diglis, Worcester8,991 residents · 70.0% owned · 13.3% no carShrewsbury Copthorne & Bowbrook, Shropshire10,662 residents · 70.3% owned · 12.8% no carAbingdon Audlett Drive & Farm Road, Vale of White Horse5,740 residents · 75.2% owned · 14.1% no carMacclesfield Bollinbrook, Cheshire East7,325 residents · 78.1% owned · 14.1% no carWesthoughton East, Bolton9,747 residents · 79.8% owned · 11.7% no carLacey Green & Wilmslow Park, Cheshire East6,781 residents · 70.3% owned · 10.8% no car

Census 2021 · Census neighbourhood (MSOA)

Life in Thornhill

People, households and homes at the stated Census geography. These describe the 2021 population, not the occupants of a particular home.

Tenure

Owned76%
1,914 households
Private rented18.3%
462 households
Social rented4.3%
108 households
Shared ownership1.4%
35 households
Lives rent free0%
1 households
Thornhill · Census neighbourhood (MSOA) · ONS Census 2021

Accommodation type

Detached36.9%
931 households
Semi-detached30.1%
758 households
Terraced27.5%
693 households
In a purpose-built block of flats or tenement5.2%
130 households
Part of a converted or shared house, including bedsits0.2%
4 households
In a commercial building, for example, in an office building, hotel or over a shop0.1%
3 households
Part of another converted building, for example, former school, church or warehouse0%
1 households
A caravan or other mobile or temporary structure0%
0 households
Thornhill · Census neighbourhood (MSOA) · ONS Census 2021

Car or van availability

1 car or van in household44.4%
1,117 households
2 cars or vans in household33.1%
832 households
No cars or vans in household11.4%
286 households
3 or more cars or vans in household11.2%
282 households
Thornhill · Census neighbourhood (MSOA) · ONS Census 2021

Number of bedrooms

4 or more bedrooms33.4%
841 households
3 bedrooms32.9%
829 households
2 bedrooms28.8%
726 households
1 bedroom4.9%
124 households
Thornhill · Census neighbourhood (MSOA) · ONS Census 2021

Household composition

Single family household66.5%
1,677 households
One-person household30.5%
770 households
Other household types3%
75 households
Thornhill · Census neighbourhood (MSOA) · ONS Census 2021

Household size

2 people in household35.4%
893 households
1 person in household30.5%
768 households
3 people in household17%
428 households
4 people in household13.1%
330 households
5 people in household3.2%
80 households
6 people in household0.6%
15 households
7 people in household0.3%
7 households
8 or more people in household0%
1 households
0 people in household0%
0 households
Thornhill · Census neighbourhood (MSOA) · ONS Census 2021

Age

Under 1516.2%
925 residents
15–2917.1%
974 residents
30–4419%
1,082 residents
45–6430%
1,712 residents
65 and over17.7%
1,008 residents
Thornhill · Census neighbourhood (MSOA) · ONS Census 2021

Ethnic group

White92%
5,246 residents
Asian, Asian British or Asian Welsh3.4%
193 residents
Mixed or Multiple ethnic groups2%
116 residents
Other ethnic group1.9%
108 residents
Black, Black British, Black Welsh, Caribbean or African0.6%
37 residents
Thornhill · Census neighbourhood (MSOA) · ONS Census 2021

Highest qualification

Level 4 qualifications or above46.7%
2,202 residents aged 16 and over
Level 3 qualifications16.2%
765 residents aged 16 and over
Level 2 qualifications13%
614 residents aged 16 and over
No qualifications10.4%
491 residents aged 16 and over
Level 1 and entry level qualifications7.6%
357 residents aged 16 and over
Apprenticeship4.3%
201 residents aged 16 and over
Other qualifications1.9%
88 residents aged 16 and over
Thornhill · Census neighbourhood (MSOA) · ONS Census 2021

Economic activity

Economically active (excluding full-time students)63.3%
2,986 residents aged 16 and over
Economically inactive34.7%
1,636 residents aged 16 and over
Economically active and a full-time student2%
93 residents aged 16 and over
Thornhill · Census neighbourhood (MSOA) · ONS Census 2021

Occupational class (NS-SeC)

L4, L5 and L6 Lower managerial, administrative and professional occupations26.4%
1,246 residents aged 16 and over
L1, L2 and L3 Higher managerial, administrative and professional occupations20.1%
950 residents aged 16 and over
L7 Intermediate occupations16.2%
763 residents aged 16 and over
L12 Semi-routine occupations8.3%
393 residents aged 16 and over
L8 and L9 Small employers and own account workers8.2%
386 residents aged 16 and over
L13 Routine occupations6%
281 residents aged 16 and over
L15 Full-time students5.6%
264 residents aged 16 and over
L14.1 and L14.2 Never worked and long-term unemployed5.5%
258 residents aged 16 and over
L10 and L11 Lower supervisory and technical occupations3.8%
177 residents aged 16 and over
Thornhill · Census neighbourhood (MSOA) · ONS Census 2021

General health

Very good health51.9%
2,956 residents
Good health33.1%
1,885 residents
Fair health11%
627 residents
Bad health2.9%
164 residents
Very bad health1.2%
66 residents
Thornhill · Census neighbourhood (MSOA) · ONS Census 2021

Disability

Not disabled under the Equality Act84.4%
4,810 residents
Disabled under the Equality Act15.6%
890 residents
Thornhill · Census neighbourhood (MSOA) · ONS Census 2021

Household deprivation

Household is not deprived in any dimension59.1%
1,488 households
Household is deprived in one dimension29.1%
733 households
Household is deprived in two dimensions9.8%
246 households
Household is deprived in three dimensions1.9%
48 households
Household is deprived in four dimensions0.2%
4 households
Thornhill · Census neighbourhood (MSOA) · ONS Census 2021

Each percentage uses its Census table’s own total. Rounding and source categories can affect totals. ONS Census data · OGL v3.0.

How the similarity is worked out

Alike on the Census, which is not the same as alike to live in.

Every neighbourhood is described by its shares across the Census themes above — tenure, housing, cars, household make-up, age, ethnic group, qualifications, work, health and deprivation — each theme weighted equally, which is the approach ONS takes in its own Output Area Classification. The neighbourhoods listed are the closest on those numbers, published in full rather than folded into a score. Nothing here measures schools, crime, prices or what a place is like to be in, and a close match is a statistical fact rather than a suggestion to move.

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Evidence ledger

Source and date are part of the record.

Shared catalogue checked 2026-08-28: 88 candidate data layers listed. Catalogue presence is not publication approval; only separately approved public projections may be shown.