Photo: Jaggery · CC BY-SA 2.0Above 96% of UK towns: 38% of households have dependent children
One-person households: 22% here and 32% across Wales’s towns. Across Marshfield, 61% of households live in a detached house. Compared with other places, households without a car or van are scarce here: 7.6%, fewer than in 93% of UK towns. In 2021, the Census found 2,386 residents locally, living in 892 households.
What the Census says about Marshfield’s people
A village of families
38% of Marshfield’s 892 households had dependent children in 2021, more than in 96% of UK towns. 20% of residents are under 15. Households ↓
Written from the data on this page: ONS Census 2021 (output areas summed to the 2022 built-up area).
In Marshfield, 15% of residents are 65 or over, fewer than in 89% of UK towns
Share of residents in each five-year age band, Census 2021.
Here 10% of residents are aged 15 to 24, where the figure across Wales’s towns is 12%. By contrast, half of Marshfield’s residents are under 42.6, younger than in 65% of UK towns.
Broad ages · share of residents
Women and men · all residents
50% women, 50% men
About an even split. Across Wales, 51% of residents are women.
6% of adults are full-time students, more than in 84% 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%.
46% of Marshfield’s adults are in managerial and professional jobs and 14% in routine and semi-routine work, against 29% and 27% across Wales’s towns. Residents who moved in within the year: 7.4% of the total. The wider picture: 8% of adults are full-time students across Wales’s towns.
The Census was taken on 21 March 2021, in term time, so students were counted at their term addresses.
Larger households than 97% of UK towns: 2.6 people on average
Household make-up at the 2021 Census. Each square is 1% of households.
Against Gwent’s towns and Wales’s towns
People per household
Wales’s towns.
Shared households of unrelated adults account for 2.2%.
Few flats: only 1.9% of households in Marshfield 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
Compared with 29% across Wales’s towns, 18% of households live in a terraced house here. Households in flats: 14% across Wales’s towns, for comparison.
98% of residents have English as their main language, a share 70% of UK towns don’t reach
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 10%
When those born abroad arrived
Main language · residents aged 3 and over
Since 2017: 19% of those born abroad, against 23% across Wales’s towns. Lower than in 52% of UK towns: 6.1% of residents were born outside the UK. The benchmark for residents whose main language is English across Wales’s towns: 96%. By birthplace, the largest groups from abroad were born in the Middle East and Asia (2.4%) and in EU countries (2.2%).
In Marshfield, 9.3% of residents can speak Welsh
Welsh language skills, residents aged 3 and over, Census 2021.
Welsh language skills · residents aged 3 and over
At the 2021 Census, 215 residents aged 3 and over, 9.3%, said they can speak Welsh, against 16% across Welsh towns: fewer than in 74% of Welsh towns. Within Gwent, Abertridwr and Senghenydd has the largest share, 14%.
More residents with no religion than 59% of UK towns: 42%
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: 90% of Marshfield · Gwent’s towns 91% · Wales’s towns 90%.
Religion · all residents
At 90%, residents who describe themselves as White British sit close to the figure across Wales’s towns. Set beside that, 47% of residents said they have no religion across Wales’s towns. Muslims make up 1.7% of residents. Fewer residents who describe themselves as Christian than in 54% of UK towns: 49%.
Married adults and civil partners make up 55% in Marshfield, more than in 89% 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
Heavy unpaid care, 50 hours a week or more, falls to 53 residents. Compared with other places, adults who have never married are scarce here: 29%, fewer than in 75% of UK towns. Set beside that, 43% of adults are married or in a civil partnership across Wales’s towns. Nearly one in ten residents give unpaid care, about the same as across Wales’s towns.
The share of adults with a degree-level qualification: 42%
Highest qualification, residents 16 and over, Census 2021.
Highest qualification · residents 16 and over
Across Wales’s towns, 20% of adults have no qualification; in Marshfield, 14%, while 42% hold one at degree level (31%).
A younger town than 4 of the 7 around it: Marshfield
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
- 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.
- “Gwent’s towns” and “Wales’s towns” mean their built-up areas. Census comparisons pool every built-up area in Gwent (or Wales), summed the same way as Marshfield’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 Marshfield’s residents
What is the population of Marshfield?
The 2021 Census counted 2,386 people in Marshfield’s built-up area.
What is the average age in Marshfield?
The median age was 42.6 at the 2021 Census. 10% of residents were 15 to 24 and 15% were 65 or over.
How diverse is Marshfield?
90% of residents described themselves as White British in 2021, against 90% across Wales’s towns and 91% across Gwent’s towns. 6.1% were born outside the UK.
What religion are people in Marshfield?
42% said they had no religion and 49% that they were Christian at the 2021 Census; 1.7% were Muslim and 4.2% didn’t answer.
Is Marshfield good for families?
38% of households had dependent children in 2021, against 27% across Wales’s towns. Schools are on Marshfield’s schools page.
How many people speak Welsh in Marshfield?
215 residents aged 3 and over, 9.3%, said they can speak Welsh at the 2021 Census, against 16% across Welsh towns.
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, TS032). 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.