Photo: Talskiddy at English Wikipedia · CC BY-SA 3.0A higher share of residents with no religion than 96% of UK towns, at 52%
Households in flats: 7.2% here and 23% across England’s towns. On the census count, 31% of households have dependent children. The median age in St Dennis is 41.2, lower than in 74% of UK towns. In 2021, the Census found 2,363 residents in the village, living in 951 households.
What the Census says about St Dennis’s people
More with no religion than most
52% of residents answered “no religion” in 2021 and 40% 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).
A higher share of residents aged 15 to 24 than 91% of UK towns, at 12%
Share of residents in each five-year age band, Census 2021.
Compared with 18% across England’s towns, nearly a fifth of residents are 65 or over here. The largest age band is 10–14: 7.5% of residents.
Broad ages · share of residents
Women and men · all residents
51% women, 49% men
About an even split. Across England, 51% of residents are women.
More full-time students than 77% of UK towns: 5.6%
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%.
By class, 18% of adults are in managerial and professional jobs and 37% in routine and semi-routine work (England’s towns: 33% and 24%). For full-time students, the comparison across England’s towns is 7.9%. Residents who moved in within the year account for 7.6%.
The Census was taken on 21 March 2021, in term time, so students were counted at their term addresses.
Larger households than 88% of UK towns: 2.5 people on average
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.
27% of households are one person living alone, against 30% across England’s towns. More shared households of unrelated adults than in 86% of UK towns: 3.5%.
Households without a car or van: 14%, a lower share than 59% 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
Just over a fifth of households live in a terraced house (England’s towns: 24%). On the census count, 27% of households live in a detached house.
Below 95% of UK towns: 2.6% of residents were born outside the UK
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
Set against 90% across England’s towns, 99% of residents have English as their main language in St Dennis. Most residents from abroad were born in EU countries (1.4%) or in Africa (0.5%). Across England’s towns, the share of residents born outside the UK is 18%.
Fewer residents who describe themselves as Christian than 93% of UK towns: 40%
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: 96% of St Dennis · Cornwall’s towns 93% · England’s towns 73%.
Religion · all residents
After White British, the most common groups are Other White (1.7%), Mixed or multiple (0.9%) and Bangladeshi (0.2%). More residents who describe themselves as White British than in 85% of UK towns: 96%. The benchmark for residents who describe themselves as Christian across England’s towns: 46%.
11% of residents give unpaid care, more than in 85% of UK towns
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
108 residents give 50 hours or more of unpaid care each week. Higher than in 64% of UK towns: 35% of adults have never married or formed a civil partnership. Across the comparison, 8.7% of residents give unpaid care across England’s towns. With married adults and civil partners at 48%, St Dennis is behind 51% of UK towns on that count.
Degree-level qualifications reach 18% of adults
Highest qualification, residents 16 and over, Census 2021.
Highest qualification · residents 16 and over
Degree-level qualifications cover 18% of adults in St Dennis, 34% across England’s towns; 23% have no qualification, against 18%.
St Dennis sits below 4 of its 7 closest neighbours on median age
Nearby built-up areas coloured by median age, Census 2021. Tap a town for its page.
| Town | People | Away | Median age | 65+ | Homes with children |
|---|---|---|---|---|---|
| St Dennis | 2,363 | — | 41.2 | 19% | 31% |
| Nanpean | 1,077 | 1 mi | 40.3 | 16% | 28% |
| Foxhole | 1,526 | 1.8 mi | 42.3 | 19% | 27% |
| Indian Queens, Fraddon and St Columb Road | 3,888 | 2.5 mi | 40.4 | 18% | 32% |
| St Stephen | 2,339 | 2.6 mi | 44.3 | 21% | 32% |
| Roche | 2,311 | 2.8 mi | 43 | 21% | 28% |
| Trewoon | 1,246 | 3.8 mi | 47 | 24% | 26% |
| Bugle | 2,430 | 4.2 mi | 38.4 | 16% | 30% |
Health, work and homes have their own pages
What this data can and can’t tell you
- The Census was taken in a lockdown, in term time. 21 March 2021 fell in term time, and students were asked to give their term-time address, so most were counted where they study. Some may have been living with family that day.
- “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 Dennis’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 Dennis’s residents
What is the population of St Dennis?
The 2021 Census counted 2,363 people in St Dennis’s built-up area.
What is the average age in St Dennis?
The median age was 41.2 at the 2021 Census. 12% of residents were 15 to 24 and 19% were 65 or over.
How diverse is St Dennis?
96% of residents described themselves as White British in 2021, against 73% across England’s towns and 93% across Cornwall’s towns. 2.6% were born outside the UK.
What religion are people in St Dennis?
52% said they had no religion and 40% that they were Christian at the 2021 Census; 0.3% were Muslim and 7.1% didn’t answer.
Is St Dennis good for families?
31% of households had dependent children in 2021, against 29% across England’s towns. Schools are on St Dennis’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.