Photo: Jack Hill · CC BY-SA 2.0A smaller share of households without a car or van than 98% of UK towns: 5.6%
Set against 29% across England’s towns, 33% of households have dependent children in Flamstead. For Flamstead, the census puts one-person households at 22%. 58% of adults are married or in a civil partnership, more than in 95% of UK towns. Census day 2021: 1,055 residents and 421 households locally.
Residents aged 65 and over: 21%, a lower share than 59% of UK towns
Share of residents in each five-year age band, Census 2021.
The median age in Flamstead is 45.5, higher than in 58% of UK towns. Residents aged 15 to 24 account for 9.8%. By way of comparison, 18% of residents are 65 or over across England’s towns. In Oaklands, the oldest of Hertfordshire’s towns by this measure, it is 28%.
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.
A lower share of residents who moved in within the year than 72% of UK towns, at 7.7%
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%.
Set against 7.9% across England’s towns, 6.8% of adults are full-time students in Flamstead. As a reference point, 11% of residents lived at another address a year earlier across England’s towns.
The Census was taken on 21 March 2021, in term time, so students were counted at their term addresses.
A lower share of shared households of unrelated adults than 94% of UK towns, at 1.4%
Household make-up at the 2021 Census. Each square is 1% of households.
Against Hertfordshire’s towns and England’s towns
People per household
England’s towns.
In Flamstead the average household is 2.5 people, beside 2.4 across England’s towns. Across England’s towns, shared households of unrelated adults come to 4.3%.
Below 75% of UK towns: 6.5% of households live in a flat or apartment
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
Terraced houses are home to nearly a quarter of households, against 24% across England’s towns. Households in detached houses account for 36%.
Flamstead: 8.8% of residents were born outside the UK, above 69% 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 25%
Main language · residents aged 3 and over
Among residents born abroad, the largest groups were born in EU countries (4.4%) and in the Middle East and Asia (1.9%). Typically, 18% of residents were born outside the UK across England’s towns. Here 97% of residents have English as their main language, where the figure across England’s towns is 90%.
A higher share of residents who describe themselves as Christian than 80% of UK towns, at 55%
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: 89% of Flamstead · Hertfordshire’s towns 71% · England’s towns 73%.
Religion · all residents
Behind White British, the largest groups are Other White (5.6%), Mixed or multiple (2.6%) and African (0.6%). The usual figure: 46% of residents describe themselves as Christian across England’s towns. On residents who describe themselves as White British, Flamstead sits lower than 69% of UK towns: 89%. 36% of residents said they have no religion, against 37% across England’s towns.
Only 25% of adults have never married or formed a civil partnership in Flamstead
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
16 residents care, unpaid, for at least 50 hours a week. Compared with other places, unpaid carers are scarce here: 7%, fewer than in 96% of UK towns. As a yardstick, nearly two in five adults have never married or formed a civil partnership across England’s towns.
Qualified to degree level: 43% of adults
Highest qualification, residents 16 and over, Census 2021.
Highest qualification · residents 16 and over
In Flamstead, 43% of adults hold a degree-level qualification, against 34% across England’s towns, while 12% have no qualification at all (18%). A levels are the highest qualification of 16%, many of them students still working towards a degree.
Flamstead and its 7 nearest towns: 4 of them 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 |
|---|---|---|---|---|---|
| Flamstead | 1,055 | — | 45.5 | 21% | 33% |
| Markyate | 3,174 | 1.6 mi | 41.6 | 16% | 32% |
| Redbourn | 5,188 | 2 mi | 46.3 | 24% | 32% |
| Slip End | 1,410 | 2.4 mi | 46.5 | 26% | 26% |
| Caddington | 3,288 | 3.3 mi | 50.3 | 28% | 25% |
| Kensworth | 1,517 | 3.6 mi | 46 | 21% | 29% |
| Harpenden | 30,964 | 3.7 mi | 43.2 | 18% | 38% |
| Hemel Hempstead | 95,995 | 4.5 mi | 38.5 | 15% | 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.
- “Hertfordshire’s towns” and “England’s towns” mean their built-up areas. Census comparisons pool every built-up area in Hertfordshire (or England), summed the same way as Flamstead’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 Flamstead’s residents
What is the population of Flamstead?
The 2021 Census counted 1,055 people in Flamstead’s built-up area.
What is the average age in Flamstead?
The median age was 45.5 at the 2021 Census. 9.8% of residents were 15 to 24 and 21% were 65 or over.
How diverse is Flamstead?
89% of residents described themselves as White British in 2021, against 73% across England’s towns and 71% across Hertfordshire’s towns. 8.8% were born outside the UK.
What religion are people in Flamstead?
36% said they had no religion and 55% that they were Christian at the 2021 Census; 0.7% were Muslim and 5.9% didn’t answer.
Is Flamstead good for families?
33% of households had dependent children in 2021, against 29% across England’s towns. Schools are on Flamstead’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.