Photo: Rept0n1x · CC BY-SA 3.0A median age of 39.8: Flint is younger than 81% of UK towns
43% of adults are married or in a civil partnership across Wales’s towns, against 41% in Flint. At the 2021 Census, 12,776 people lived locally, in 5,472 households. On the census count, 52% of residents describe themselves as Christian. Compared with other places, households with dependent children are common here: 29%, more than in 67% of UK towns.
A +9% change since 2011: Flint grew faster than 56% of UK towns
ONS mid-year estimates, each year indexed to mid-2011 = 100. Flint’s figure is the small areas (2021 LSOAs) that make up the town.
People, mid-2011 = 100
Change by age, 2011 to 2024
About 13,000 people in 2011; 14,100 in 2024.
The largest rise in a single year came from mid-2018 to mid-2019: 300 people. The 65 and over age group changed most (+32%) and the 16 to 29 least (−5%).
Only 18% of residents are 65 or over in Flint
Share of residents in each five-year age band, Census 2021.
Residents aged 15 to 24: 11% here and 12% across Wales’s towns. Typically, 21% of residents are 65 or over across Wales’s towns. The biggest five-year age group is 30–34, with 7.5% of residents.
Median age of UK towns of 2,500+
■ Flint, 39.8. The typical town is 44.4.
Broad ages · share of residents
Women and men · all residents
52% women, 48% men
About 94 men for every 100 women. Across Wales, 51% of residents are women.
A higher share of full-time students than 56% of UK towns, at 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; Flint has 23% and 37%. The town has fewer residents who moved in within the year than 58% of UK towns, at 8.3%. Against that, 8% of adults are full-time students across Wales’s towns.
Flint households average 2.3 people, larger than in 60% 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.
One-person households: 30% of the total. 2.5% of households are unrelated adults sharing a home, a higher share than in 56% of UK towns.
Only 16% of households live in a terraced house in Flint
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
Flats are home to 13% of households, against 14% across Wales’s towns. Across Wales’s towns, 29% of households live in a terraced house. Locally, 21% of households have no car or van. Fewer households in detached houses than in 58% of UK towns: 26%.
Residents whose main language is English: 94%, a lower share than 84% 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 15%
When those born abroad arrived
Main language · residents aged 3 and over
Arrivals from 2017 on account for 16% of residents born abroad, beside 23% across Wales’s towns. The share of residents born outside the UK stands at 8.9%. For comparison, 96% of residents have English as their main language across Wales’s towns.
Can speak Welsh: 11% of Flint’s residents
Welsh language skills, residents aged 3 and over, Census 2021.
Welsh language skills · residents aged 3 and over
Welsh speakers number 1,402, or 11% of residents aged 3 and over, against 16% across Welsh towns: fewer than in 55% of them. In Clwyd, Llanfairfechan has the highest share (44%).
Flint sits below 58% of UK towns for residents with no religion (40%)
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 Flint · Clwyd’s towns 92% · Wales’s towns 90%.
Religion · all residents
Leading the other groups after White British: Other White (7.2%), Mixed or multiple (0.9%) and Indian (0.3%). The comparison figure for residents with no religion is 47% across Wales’s towns. On residents who describe themselves as White British, Flint sits lower than 61% of UK towns: 90%.
A higher share of adults who have never married than 85% of UK towns, at 39%
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
Unpaid care takes 50 hours a week or more for 414 people. More unpaid carers than in three quarters of UK towns: 10%. Adults who have never married make up 38% across Wales’s towns.
22% of adults have a degree-level qualification
Highest qualification, residents 16 and over, Census 2021.
Highest qualification · residents 16 and over
At degree level, Flint counts 22% of its adults, against 31% across Wales’s towns; at the other end, 24% have no qualification (20%).
Of 382 UK towns its size (9,000 to 17,000 people), the 49th youngest
Median age, Census 2021. Hover a dot for its students and residents born abroad; click for its page.
At the ends of the range sit Aberystwyth (25), the youngest, and Sidmouth (60.4), the oldest. Nearest to Flint in age: Brackley (39.8), Amesbury (39.8), Featherstone (39.9) and Wath upon Dearne (39.9).
No nearby town is as young as Flint
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 |
|---|---|---|---|---|---|
| Flint | 12,776 | — | 39.8 | 18% | 29% |
| Northop | 1,030 | 2.4 mi | 50.9 | 27% | 23% |
| Pentre Halkyn | 1,082 | 2.7 mi | 51.1 | 29% | 22% |
| Bagillt | 5,943 | 3.2 mi | 42.2 | 19% | 29% |
| Northop Hall | 1,826 | 3.4 mi | 45.1 | 23% | 29% |
| Connah's Quay | 16,768 | 3.5 mi | 40.4 | 18% | 31% |
| Soughton | 1,697 | 3.8 mi | 51.7 | 28% | 23% |
| Holywell | 7,741 | 4.3 mi | 43.1 | 20% | 28% |
Health, work and homes have their own pages
What this data can and can’t tell you
- “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 Flint’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. Flint’s trend uses the small areas (2021 LSOAs) with most of their people inside it: 13,733 people in 2021, against 12,776 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 Flint’s residents
What is the population of Flint?
The 2021 Census counted 12,776 people in Flint’s built-up area. The ONS estimates the same small areas held 14,100 people in mid-2024, 9% more than in 2011.
What is the average age in Flint?
The median age was 39.8 at the 2021 Census, younger than 81% of UK towns. 11% of residents were 15 to 24 and 18% were 65 or over.
How diverse is Flint?
90% of residents described themselves as White British in 2021, against 90% across Wales’s towns and 92% across Clwyd’s towns. 8.9% were born outside the UK.
What religion are people in Flint?
40% said they had no religion and 52% that they were Christian at the 2021 Census; 0.4% were Muslim and 7.1% didn’t answer.
Is Flint good for families?
29% of households had dependent children in 2021, against 27% across Wales’s towns. Schools are on Flint’s schools page.
How many people speak Welsh in Flint?
1,402 residents aged 3 and over, 11%, 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.