Photo: DS Pugh · CC BY-SA 2.0A Welsh-speaking town: 19% of Mold’s residents speak Welsh
The share of residents who describe themselves as White British tops 79% of UK towns: 95%. On the census count, 14% of households live in a terraced house. One in ten residents are aged 15 to 24, more than in 69% of UK towns. Mold counted 9,890 residents and 4,444 households at the 2021 Census.
What the Census says about Mold’s people
A Welsh-speaking town
1,782 residents, 19% of those aged 3 and over, said they can speak Welsh in 2021, more than in 72% of Welsh towns. Welsh language ↓
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.
From 2011 to 2024, 74% of UK towns grew faster than Mold: +2%
ONS mid-year estimates, each year indexed to mid-2011 = 100. Mold’s figure is the small areas (2021 LSOAs) that make up the town.
People, mid-2011 = 100
Change by age, 2011 to 2024
About 10,000 people in 2011; 10,300 in 2024.
The steepest year was mid-2013 to mid-2014, up 130 people. Split by age, the 65 and over changed most (+21%) and the 0 to 15 least (−7%).
Residents aged 65 and over: 23%, a higher share than 60% of UK towns
Share of residents in each five-year age band, Census 2021.
More residents are 50–54 than any other five-year age: 7.3% of residents. To put it in context, 21% of residents are 65 or over across Wales’s towns. In Penrhyn Bay, the oldest of Clwyd’s towns by this measure, it is 34%.
Median age of UK towns of 2,500+
■ Mold, 45.1. 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 Wales, 51% of residents are women.
A higher share of full-time students than 73% of UK towns, at 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%.
Across Wales’s towns, 29% of adults are in managerial and professional jobs and 27% in routine or semi-routine work; Mold has 35% and 26%. Residents who moved in within the year account for 8.6%. 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.
Mold households average 2.2 people, smaller than in 72% of UK towns
Household make-up at the 2021 Census. Each square is 1% of households.
Against Clwyd’s towns and Wales’s towns
People per household
Wales’s towns.
The share of shared households of unrelated adults trails 73% of UK towns: 1.9%. Here, a third of households are one person living alone. Households with dependent children are rarer here than in 57% of UK towns.
Above 67% of UK towns: 36% of households live in a detached house
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
Nearly a fifth of households have no car or van (Wales’s towns: 21%). Households in flats account for 14%. To put it in context, 24% of households live in a detached house across Wales’s towns.
5% of residents were born outside the UK, below 65% 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 10%
When those born abroad arrived
Main language · residents aged 3 and over
16% of the town’s residents born abroad came in 2017 or later, set against 23% across Wales’s towns. At 98%, the share of residents whose main language is English is higher than in 58% of UK towns. Residents born outside the UK: 7.4% across Wales’s towns, for comparison. Most residents from abroad were born in EU countries (2.8%) or in the Middle East and Asia (1.1%).
19% of people in Mold speak Welsh
Welsh language skills, residents aged 3 and over, Census 2021.
Welsh language skills · residents aged 3 and over
Welsh speakers number 1,782, or 19% of residents aged 3 and over, against 16% across Welsh towns: more than in 72% of them. No town in Clwyd beats Llanfairfechan (44%).
In Mold, 43% of residents said they have no religion, more than in 61% 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: 95% of Mold · Clwyd’s towns 92% · Wales’s towns 90%.
Religion · all residents
After White British, the most common groups are Other White (2.6%), Mixed or multiple (0.8%) and Indian (0.3%). The usual figure: 47% of residents said they have no religion across Wales’s towns. Half of residents describe themselves as Christian, more than in 51% of UK towns.
Adults who have never married make up 34% in Mold, more than in 63% 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
Married adults and civil partners make up 44%, against 43% across Wales’s towns. Unpaid carers are more common here than in 56% of UK towns. Measured more widely, 38% of adults have never married or formed a civil partnership across Wales’s towns.
The share of adults with a degree-level qualification: 35%
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 Mold, 17%, while 35% hold one at degree level (31%).
Of 413 UK towns its size (7,000 to 13,000 people), the 182nd oldest
Median age, Census 2021. Hover a dot for its students and residents born abroad; click for its page.
Ages run from 28.4 in Tidworth to 61 in Seaton. Nearest to Mold in age: Rusthall and Langton Green (45.1), Pool and Illogan (45.1), Kippax (45.2) and Meltham (45.2).
Median age: 3 of the 7 towns around Mold are older
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 |
|---|---|---|---|---|---|
| Mold | 9,890 | — | 45.1 | 23% | 27% |
| Mynydd Isa | 4,738 | 1.3 mi | 50 | 29% | 25% |
| Soughton | 1,697 | 1.6 mi | 51.7 | 28% | 23% |
| Buckley | 13,562 | 2.7 mi | 43.3 | 20% | 28% |
| Northop | 1,030 | 2.9 mi | 50.9 | 27% | 23% |
| Northop Hall | 1,826 | 3.2 mi | 45.1 | 23% | 29% |
| Leeswood | 1,948 | 3.3 mi | 44.1 | 18% | 28% |
| Penyffordd | 3,822 | 4.3 mi | 40.9 | 19% | 33% |
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.
- “Clwyd’s towns” and “Wales’s towns” mean their built-up areas. Census comparisons pool every built-up area in Clwyd (or Wales), summed the same way as Mold’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. Mold’s trend uses the small areas (2021 LSOAs) with most of their people inside it: 10,149 people in 2021, against 9,890 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 Mold’s residents
What is the population of Mold?
The 2021 Census counted 9,890 people in Mold’s built-up area. The ONS estimates the same small areas held 10,300 people in mid-2024, 2% more than in 2011.
What is the average age in Mold?
The median age was 45.1 at the 2021 Census, older than 54% of UK towns. 10% of residents were 15 to 24 and 23% were 65 or over.
How diverse is Mold?
95% of residents described themselves as White British in 2021, against 90% across Wales’s towns and 92% across Clwyd’s towns. 5% were born outside the UK.
What religion are people in Mold?
43% said they had no religion and 50% that they were Christian at the 2021 Census; 0.5% were Muslim and 6.1% didn’t answer.
Is Mold good for families?
27% of households had dependent children in 2021, against 27% across Wales’s towns. Schools are on Mold’s schools page.
How many people speak Welsh in Mold?
1,782 residents aged 3 and over, 19%, 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) · 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.