Photo: Lewis Clarke · CC BY-SA 2.0St Just is older than 95% of UK towns: a median age of 53.9
A household here has 2 people on average; across England’s towns, 2.4. Few places have as many households in terraced houses: 53% here, more than in 98% of UK towns. St Just is home to 1,830 residents in 918 households, by the 2021 Census. Just over two in five households are one person living alone.
What the Census says about St Just’s people
Older than most towns
Half of St Just’s residents are under 53.9 and half over, against 44.4 in the typical UK town. 31% are 65 or over, against 18% across England’s towns. Ages ↓
More with no religion than most
47% of residents answered “no religion” in 2021 and 42% Christian, against 37% and 46% across England’s towns. Ethnicity & religion ↓
Written from the data on this page: ONS Census 2021 (output areas summed to the 2022 built-up area).
St Just sits above 93% of UK towns for residents aged 65 and over (31%)
Share of residents in each five-year age band, Census 2021.
Compared with 12% across England’s towns, 8.8% of residents are aged 15 to 24 here. Measured more widely, 18% of residents are 65 or over across England’s towns.
Broad ages · share of residents
Women and men · all residents
53% women, 47% men
About 87 men for every 100 women. Across England, 51% of residents are women. Women live longer than men, so towns with many older residents have more women.
In St Just, 4.7% of adults are full-time students, fewer than in 54% of UK towns
What adults did at the 2021 Census (the ONS’s NS-SEC classes), and where residents lived a year earlier.
Adults by occupation class · residents 16 and over
Address a year before the Census
Residents who lived somewhere else a year earlier. The bar runs to 25%.
29% of St Just’s adults are in managerial and professional jobs and 28% in routine and semi-routine work, against 33% and 24% across England’s towns. On average, 7.9% of adults are full-time students across England’s towns. Locally, 8.7% of residents lived at another address a year earlier.
A smaller share of households with dependent children than 97% of UK towns: 18%
Household make-up at the 2021 Census. Each square is 1% of households.
Against Cornwall’s towns and England’s towns
People per household
England’s towns.
Here 2.1% of households are unrelated adults sharing a home, where the figure across England’s towns is 4.3%. Elsewhere, 29% of households have dependent children across England’s towns.
Households in detached houses make up 14% in St Just, less than in 86% of UK towns
Accommodation type and cars or vans per household, Census 2021. Owning and renting are on Cost of living.
Type of home
Cars or vans · share of households
23% of households have no car or van, against 24% across England’s towns. On households in flats, St Just sits higher than 67% of UK towns: 14%. The comparison figure for households in detached houses is 21% across England’s towns.
Residents whose main language is English make up 99% in St Just, more than in 76% of UK towns
Country of birth, year of arrival and main language, Census 2021.
Born outside the UK, by region · share of all residents; the bar runs to 25%
Main language · residents aged 3 and over
4.8% of residents were born outside the UK (England’s towns: 18%). Most residents from abroad were born in EU countries (2.1%) or in the rest of Europe (1%). To put it in context, nine in ten residents have English as their main language across England’s towns.
Residents who describe themselves as Christian make up 42% in St Just, less than in 89% of UK towns
How residents described themselves at the 2021 Census. Lines join the lowest and highest of the three figures.
Ethnic groups other than White British · all residents
White British, not charted: 94% of St Just · Cornwall’s towns 93% · England’s towns 73%.
Religion · all residents
By its share of residents with no religion (47%), St Just is above 86% of UK towns. Locally, 94% of residents describe themselves as White British. The benchmark for residents who describe themselves as Christian across England’s towns: 46%.
A larger share of unpaid carers than 88% of UK towns: 11%
Legal partnership status (residents 16 and over) and unpaid care (residents 5 and over), Census 2021.
Partnership status · residents 16 and over
Unpaid care given · share of residents 5 and over
By its share of married adults and civil partners (46%), St Just is below 65% of UK towns. Adults who have never married: 31% of the total. Across England’s towns, nearly one in ten residents give unpaid care.
Adults with a degree-level qualification: 32%
Highest qualification, residents 16 and over, Census 2021.
Highest qualification · residents 16 and over
Against 34% across England’s towns, 32% of adults here have a degree-level qualification, while 18% hold no qualification (18%).
Every neighbour of St Just has a younger population
Nearby built-up areas coloured by median age, Census 2021. Tap a town for its page.
Health, work and homes have their own pages
What this data can and can’t tell you
- “Cornwall’s towns” and “England’s towns” mean their built-up areas. Census comparisons pool every built-up area in Cornwall (or England), summed the same way as St Just’s figures, so households in open countryside are left out.
- Small counts are blurred. The ONS adds small random changes to Census counts to protect privacy, so the same total differs a little between tables, and the shares of a small town can move by a point or two.
Questions about St Just’s residents
What is the population of St Just?
The 2021 Census counted 1,830 people in St Just’s built-up area.
What is the average age in St Just?
The median age was 53.9 at the 2021 Census. 8.8% of residents were 15 to 24 and 31% were 65 or over.
How diverse is St Just?
94% of residents described themselves as White British in 2021, against 73% across England’s towns and 93% across Cornwall’s towns. 4.8% were born outside the UK.
What religion are people in St Just?
47% said they had no religion and 42% that they were Christian at the 2021 Census; 0% were Muslim and 7.9% didn’t answer.
Is St Just good for families?
18% of households had dependent children in 2021, against 29% across England’s towns. Schools are on St Just’s schools page.
Sources: ONS Census 2021, output areas summed to the ONS 2022 built-up area (TS002, TS003, TS004, TS007A, TS008, TS015, TS017, TS019, TS021, TS029, TS030, TS039, TS044, TS045, TS062, TS067). All under the Open Government Licence v3.0.
Contains public sector information licensed under the Open Government Licence v3.0. Contains HM Land Registry data © Crown copyright and database right 2026. Contains OS data © Crown copyright and database right 2026 (ONS boundaries). Northern Ireland: Source: NISRA; contains Land & Property Services data and Ordnance Survey of Northern Ireland information, © Crown copyright, licensed under the Open Government Licence v3.0. Scotland: contains National Records of Scotland data, Registers of Scotland data and SEPA data, © Crown copyright / © SEPA 2025, licensed under the Open Government Licence v3.0.