Photo: Robert Graham · CC BY-SA 2.0Only 7.5% of residents are aged 15 to 24 in Blackhall Mill
The share of residents who describe themselves as White British tops 90% of UK towns: 96%. Lower than in 87% of UK towns: 23% of households have dependent children. Blackhall Mill is home to 1,528 residents in 713 households, by the 2021 Census. For Blackhall Mill, the census puts households in terraced houses at 44%.
Blackhall Mill is older than 71% of UK towns: a median age of 47.3
Share of residents in each five-year age band, Census 2021.
The largest age band is 55–59: 8.8% of residents, 1.3 times the share across England’s towns. Across Blackhall Mill, 25% of residents are 65 or over.
Broad ages · share of residents
Women and men · all residents
52% women, 48% men
About 93 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.
4.2% of adults are full-time students, fewer than in 78% 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%.
Residents who moved in within the year make up 7.4%, against 11% across England’s towns. Across England’s towns, 7.9% of adults are full-time students.
Households here average 2.1 people, below 94% 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 share of shared households of unrelated adults is 2%, against 4.3% across England’s towns. On the census count, 35% of households are one person living alone.
Few flats: only 4.5% of households in Blackhall Mill live in one
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
Where 24% of households have no car or van across England’s towns, Blackhall Mill has 16%. Across England’s towns, households in flats come to 23%. Households in detached houses are rarer here than in nearly two thirds of UK towns.
Only 3.7% of Blackhall Mill’s 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
Residents whose main language is English: 99%, above 85% of UK towns. Set beside that, 18% of residents were born outside the UK across England’s towns. The two biggest birthplaces abroad are in EU countries (1.7%) and in Africa (0.7%).
In Blackhall Mill, 46% of residents said they have no religion, more than in 80% 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: 96% of Blackhall Mill · County Durham’s towns 93% · England’s towns 73%.
Religion · all residents
After White British, the most common groups are Other White (2.2%), Mixed or multiple (0.8%) and Indian (0.3%). Residents who describe themselves as Christian are rarer here than in 74% of UK towns. For comparison, 37% of residents said they have no religion across England’s towns.
Blackhall Mill: 11% of residents give unpaid care, above 79% 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
70 residents care, unpaid, for at least 50 hours a week. Set beside that, 8.7% of residents give unpaid care across England’s towns. Few places have as many adults who have never married: 35% here, more than in nearly two thirds of UK towns. Still, the share of married adults and civil partners is 42%, against 44% across England’s towns.
33% of adults are qualified to degree level
Highest qualification, residents 16 and over, Census 2021.
Highest qualification · residents 16 and over
Degree-level qualifications cover 33% of adults in Blackhall Mill, 34% across England’s towns; 19% have no qualification, against 18%.
3 in 7 nearby towns have a higher median age than Blackhall Mill
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 |
|---|---|---|---|---|---|
| Blackhall Mill | 1,528 | — | 47.3 | 25% | 23% |
| Chopwell | 2,530 | 1.3 mi | 43.6 | 22% | 20% |
| Medomsley | 1,216 | 1.3 mi | 49.6 | 25% | 25% |
| High Spen | 1,933 | 2.5 mi | 49 | 24% | 25% |
| Leadgate | 3,339 | 2.9 mi | 43.2 | 20% | 25% |
| Dipton | 2,653 | 3 mi | 45.2 | 23% | 27% |
| Rowlands Gill | 5,254 | 3.1 mi | 49 | 26% | 24% |
| Burnopfield | 2,998 | 3.3 mi | 45.9 | 24% | 25% |
Health, work and homes have their own pages
What this data can and can’t tell you
- “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 Blackhall Mill’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 Blackhall Mill’s residents
What is the population of Blackhall Mill?
The 2021 Census counted 1,528 people in Blackhall Mill’s built-up area.
What is the average age in Blackhall Mill?
The median age was 47.3 at the 2021 Census. 7.5% of residents were 15 to 24 and 25% were 65 or over.
How diverse is Blackhall Mill?
96% of residents described themselves as White British in 2021, against 73% across England’s towns and 93% across County Durham’s towns. 3.7% were born outside the UK.
What religion are people in Blackhall Mill?
46% said they had no religion and 46% that they were Christian at the 2021 Census; 0.3% were Muslim and 6.2% didn’t answer.
Is Blackhall Mill good for families?
23% of households had dependent children in 2021, against 29% across England’s towns. Schools are on Blackhall Mill’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.