Church of St. Mary Magdalene · Photo: Hodgsonge · CC BY-SA 4.0A smaller share of households in flats than 99% of UK towns: 0.7%
The share of residents who describe themselves as White British is 98%, against 73% across England’s towns. In 2021, the Census found 2,835 residents in Trimdon, living in 1,288 households. For Trimdon, the census puts households in detached houses at 14%. More unpaid carers than in 89% of UK towns: 11%.
What the Census says about Trimdon’s people
Fewer people than in 2011
ONS mid-year estimates put Trimdon at 3,000 in 2011 and 2,800 in 2024, down 5%, against 10% for England: slower growth than in 97% of UK towns. Since 2011 ↓
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.
−5% since 2011: slower than 97% of UK towns
ONS mid-year estimates, each year indexed to mid-2011 = 100. Trimdon’s figure is the small areas (2021 LSOAs) that make up the town.
People, mid-2011 = 100
Change by age, 2011 to 2024
About 3,000 people in 2011; 2,800 in 2024.
The 65 and over age group changed most (+21%) and the 30 to 44 least (−14%).
Trimdon ranks below 59% of UK towns on residents aged 65 and over: 21%
Share of residents in each five-year age band, Census 2021.
No age band is larger than 55–59: 8.1% of residents. Typically, 18% of residents are 65 or over across England’s towns. On residents aged 15 to 24, Trimdon sits higher than just over three quarters of UK towns: 11%. In Lanchester, the oldest of County Durham’s towns by this measure, it is 32%.
Median age of UK towns of 2,500+
■ Trimdon, 44.5. The typical town is 44.4.
Broad ages · share of residents
Women and men · all residents
50% women, 50% men
About an even split. Across England, 51% of residents are women.
Fewer residents who moved in within the year than 99% of UK towns: 5.5%
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%.
21% of Trimdon’s adults are in managerial and professional jobs and 35% in routine and semi-routine work, against 33% and 24% across England’s towns. As a reference point, 11% of residents lived at another address a year earlier across England’s towns. The share of full-time students stands at 5.1%.
The Census was taken on 21 March 2021, in term time, so students were counted at their term addresses.
In Trimdon, 33% of households are one person living alone, more than in 77% of UK towns
Household make-up at the 2021 Census. Each square is 1% of households.
Against County Durham’s towns and England’s towns
People per household
England’s towns.
The typical household size is 2.2 people, against 2.4 across England’s towns. Compared with other places, shared households of unrelated adults are scarce here: 1.8%, fewer than in 81% of UK towns. The usual figure: 30% of households are one person living alone across England’s towns. Census figures put households with dependent children at 28% in Trimdon.
More car-free households than 87% of UK towns: 25% in Trimdon
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
Households in terraced houses: 18% here and 24% across England’s towns. About one household in 4 lives without a car or van.
A smaller share of residents born outside the UK than 99% of UK towns: 1.7%
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
Across England’s towns, the share of residents whose main language is English is 90%; Trimdon has 99%. Set beside that, 18% of residents were born outside the UK across England’s towns. The largest groups were born in EU countries (1.2%) and in the Middle East and Asia (0.3%).
Trimdon sits above 92% of UK towns for residents who describe themselves as Christian (59%)
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: 98% of Trimdon · County Durham’s towns 93% · England’s towns 73%.
Religion · all residents
In Trimdon, 36% of residents said they have no religion, beside 37% across England’s towns. Residents who describe themselves as Christian: 46% across England’s towns, for comparison.
More adults who have never married than 74% of UK towns: 36%
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
111 residents care, unpaid, for at least 50 hours a week. Measured more widely, 39% of adults have never married or formed a civil partnership across England’s towns. Few places have so few married adults and civil partners: 44% here, fewer than in 77% of UK towns.
20% of adults have a degree-level qualification
Highest qualification, residents 16 and over, Census 2021.
Highest qualification · residents 16 and over
At degree level, Trimdon counts 20% of its adults, against 34% across England’s towns; at the other end, 26% have no qualification (18%).
154th lowest median age among 514 UK towns of 2,500 to 4,000
Median age, Census 2021. Hover a dot for its students and residents born abroad; click for its page.
Keele is the youngest (20.6); West Chiltington the oldest (63.1). Nearest to Trimdon in age: Lindford (44.4), Fleur-de-lis and Pengam (44.4), Fordham (44.5) and South Cerney (44.5).
Around Trimdon, 4 of 7 towns have a higher 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 |
|---|---|---|---|---|---|
| Trimdon | 2,835 | — | 44.5 | 21% | 28% |
| Trimdon Grange | 1,233 | 1 mi | 46.6 | 21% | 25% |
| Fishburn | 2,387 | 1.1 mi | 45.4 | 19% | 25% |
| Trimdon Colliery | 1,788 | 1.8 mi | 43.4 | 20% | 26% |
| Kelloe | 1,434 | 2.2 mi | 46.1 | 22% | 25% |
| Bishop Middleham | 1,136 | 2.7 mi | 49 | 24% | 24% |
| Wingate | 5,033 | 2.9 mi | 40.3 | 17% | 29% |
| Wheatley Hill | 3,148 | 3 mi | 43.4 | 21% | 24% |
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.
- “County Durham’s towns” and “England’s towns” mean their built-up areas. Census comparisons pool every built-up area in County Durham (or England), summed the same way as Trimdon’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. Trimdon’s trend uses the small areas (2021 LSOAs) with most of their people inside it: 2,835 people in 2021, against 2,835 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 Trimdon’s residents
What is the population of Trimdon?
The 2021 Census counted 2,835 people in Trimdon’s built-up area. The ONS estimates the same small areas held 2,800 people in mid-2024, 5% fewer than in 2011.
What is the average age in Trimdon?
The median age was 44.5 at the 2021 Census, older than 50% of UK towns. 11% of residents were 15 to 24 and 21% were 65 or over.
How diverse is Trimdon?
98% of residents described themselves as White British in 2021, against 73% across England’s towns and 93% across County Durham’s towns. 1.7% were born outside the UK.
What religion are people in Trimdon?
36% said they had no religion and 59% that they were Christian at the 2021 Census; 0% were Muslim and 4.5% didn’t answer.
Is Trimdon good for families?
28% of households had dependent children in 2021, against 29% across England’s towns. Schools are on Trimdon’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.