Photo: Derek Harper · CC BY-SA 2.0Only 8.7% of residents are aged 15 to 24 in Threemilestone
Households with dependent children are rarer here than in 78% of UK towns. Threemilestone had 2,854 residents in 1,263 households at the 2021 Census. For Threemilestone, the census puts households in terraced houses at 14%. Here 44% of residents said they have no religion, where the figure across England’s towns is 37%.
What the Census says about Threemilestone’s people
Many carers
310 residents gave unpaid care to someone with an illness, disability or old age in 2021, 11% of those 5 and over: more than in 91% of UK towns. Relationships & caring ↓
Written from the data on this page: ONS Census 2021 (output areas summed to the 2022 built-up area) and ONS mid-year population estimates.
Slower growth than 53% of UK towns: Threemilestone changed by +7% since 2011
ONS mid-year estimates, each year indexed to mid-2011 = 100. Threemilestone’s figure is the small areas (2021 LSOAs) that make up the town.
People, mid-2011 = 100
Change by age, 2011 to 2024
About 2,700 people in 2011; 2,900 in 2024.
Growth was strongest among the 65 and over (+48%) and weakest among the 16 to 29 (−18%). Mid-2014 to mid-2015 brought the biggest yearly rise, 60 people.
Threemilestone: 24% of residents are 65 or over, above 63% of UK towns
Share of residents in each five-year age band, Census 2021.
55–59 is the most common age band: 7.5% of residents. The usual figure: 18% of residents are 65 or over across England’s towns. With a median age of 45.6, Threemilestone is older than 58% of UK towns. In Tywardreath, the oldest of Cornwall’s towns by this measure, it is 35%.
Median age of UK towns of 2,500+
■ Threemilestone, 45.6. The typical town is 44.4.
Broad ages · share of residents
Women and men · all residents
52% women, 48% men
About 92 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.
Residents who moved in within the year: 8.5%, a lower share than 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%.
In Threemilestone, just over a third of adults work in managerial and professional jobs and 26% in routine and semi-routine work, against 33% and 24% across England’s towns. 4.8% of adults are full-time students, a lower share than in 51% of UK towns. To put it in context, 11% of residents lived at another address a year earlier across England’s towns.
Shared households of unrelated adults: 3.3%, a higher share than 83% of UK towns
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.
The typical household size is 2.3 people, against 2.4 across England’s towns. For shared households of unrelated adults, the comparison across England’s towns is 4.3%. Locally, 30% of households are one person living alone.
In Threemilestone, 8.1% of households live in a flat or apartment, fewer than in 66% 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
24% of households have no car or van across England’s towns, against 14% in Threemilestone. On households in detached houses, Threemilestone sits higher than 54% of UK towns: 31%. The share of households in flats across England’s towns is 23%.
5.9% of residents were born outside the UK, below 55% 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%
When those born abroad arrived
Main language · residents aged 3 and over
Residents born abroad were most often born in the Middle East and Asia (2.3%), then in EU countries (1.8%). The usual figure: 18% of residents were born outside the UK across England’s towns. Fewer residents whose main language is English than in 52% of UK towns: 98%. Born abroad and arrived since 2017: 26% of that group, against 21% across England’s towns.
Threemilestone sits below 63% of UK towns for residents who describe themselves as Christian (48%)
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: 93% of Threemilestone · Cornwall’s towns 93% · England’s towns 73%.
Religion · all residents
The next-largest groups, after White British, are Other White (2%), Mixed or multiple (1.8%) and Indian (0.5%). On average, 46% of residents describe themselves as Christian across England’s towns. 93% of residents describe themselves as White British, more than in 54% of UK towns.
Threemilestone sits above 91% of UK towns for unpaid carers (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
Compared with 44% across England’s towns, 47% of adults are married or in a civil partnership here. To put it in context, nearly one in ten residents give unpaid care across England’s towns. 79 people care, unpaid, for 50 hours or more a week. More adults who have never married than in 54% of UK towns: 33%.
31% of adults hold a degree-level qualification
Highest qualification, residents 16 and over, Census 2021.
Highest qualification · residents 16 and over
Degree-level qualifications are held by 31% of adults in Threemilestone (England’s towns: 34%), and no qualification by 15% (England’s towns: 18%).
Of 514 UK towns its size (2,500 to 4,000 people), the 204th youngest
Median age, Census 2021. Hover a dot for its students and residents born abroad; click for its page.
Ages run from 20.6 in Keele to 63.1 in West Chiltington. Nearest to Threemilestone in age: Welham Green (45.6), Bampton (45.6), Moira (45.7) and Troedyrhiw and Pentrebach (45.7).
Nearby, 5 of 7 towns have older populations than Threemilestone
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 |
|---|---|---|---|---|---|
| Threemilestone | 2,854 | — | 45.6 | 24% | 24% |
| Shortlanesend | 1,427 | 2.4 mi | 36.2 | 13% | 38% |
| Truro | 23,060 | 2.4 mi | 42.9 | 22% | 25% |
| Carnon Downs and Devoran | 2,129 | 3 mi | 55.7 | 36% | 20% |
| Perranarworthal | 1,305 | 3.5 mi | 53.4 | 33% | 23% |
| St Day | 1,432 | 3.6 mi | 48.5 | 25% | 23% |
| Carharrack | 1,525 | 3.7 mi | 47.2 | 25% | 25% |
| Mount Hawke | 1,593 | 4.4 mi | 47.5 | 25% | 22% |
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 Threemilestone’s figures, so households in open countryside are left out. The population trend compares with the whole county and nation.
- Estimates since 2021 are modelled. The ONS builds mid-year estimates from the Census, births, deaths and migration records. Threemilestone’s trend uses the small areas (2021 LSOAs) with most of their people inside it: 2,854 people in 2021, against 2,854 in the built-up area.
- 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 Threemilestone’s residents
What is the population of Threemilestone?
The 2021 Census counted 2,854 people in Threemilestone’s built-up area. The ONS estimates the same small areas held 2,900 people in mid-2024, 7% more than in 2011.
What is the average age in Threemilestone?
The median age was 45.6 at the 2021 Census, older than 58% of UK towns. 8.7% of residents were 15 to 24 and 24% were 65 or over.
How diverse is Threemilestone?
93% of residents described themselves as White British in 2021, against 73% across England’s towns and 93% across Cornwall’s towns. 5.9% were born outside the UK.
What religion are people in Threemilestone?
44% said they had no religion and 48% that they were Christian at the 2021 Census; 0% were Muslim and 6.3% didn’t answer.
Is Threemilestone good for families?
24% of households had dependent children in 2021, against 29% across England’s towns. Schools are on Threemilestone’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) · ONS mid-year population estimates for 2021 LSOAs, mid-2011 to mid-2024. 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.