40% of households have dependent children, more than in 98% of UK towns
Just over a fifth of households are one person living alone (England’s towns: 30%). There were 140 households in Sepham Heath at the 2021 Census, home to 378 residents. Households in flats account for 2.1%. Higher than in 88% of UK towns: 48% of residents said they have no religion.
A median age of 39.9: Sepham Heath is younger than 81% of UK towns
Share of residents in each five-year age band, Census 2021.
The biggest five-year age group is 30–34, with 8.7% of residents. Fewer residents aged 65 and over than in 72% of UK towns: 19%. Just over one in ten residents are aged 15 to 24, against 12% across England’s towns.
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 full-time students than 89% of UK towns, at 3.8%
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%.
41% of Sepham Heath’s adults are in managerial and professional jobs and 13% in routine and semi-routine work, against 33% and 24% across England’s towns. Locally, 5.9% of residents lived at another address a year earlier. For full-time students, the comparison across England’s towns is 7.9%.
Larger households than 98% of UK towns: 2.7 people on average
Household make-up at the 2021 Census. Each square is 1% of households.
Against Kent’s towns and England’s towns
People per household
England’s towns.
4.3% of households are unrelated adults sharing a home across England’s towns, against 2.1% in Sepham Heath.
A lower share of households without a car or van than 99% of UK towns, at 5%
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
The share of households in terraced houses trails 95% of UK towns: 7%. Across the comparison, nearly a quarter of households have no car or van across England’s towns. In Sepham Heath, 43% of households live in a detached house.
Sepham Heath sits above 68% of UK towns for residents born outside the UK (8.8%)
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
98% of residents have English as their main language, against 90% across England’s towns. Residents born outside the UK make up 18% across England’s towns. Among residents born abroad, the largest groups were born in EU countries (2.9%) and in the Middle East and Asia (2.4%).
88% of residents describe themselves as White British, fewer than in 70% 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: 88% of Sepham Heath · Kent’s towns 82% · England’s towns 73%.
Religion · all residents
Residents who describe themselves as Christian: 46%, near enough the figure across England’s towns. The benchmark for residents who describe themselves as White British across England’s towns: 73%. Besides White British, the main groups are Other White (4.5%), Mixed or multiple (3.2%) and Chinese (0.8%).
51% of adults are married or in a civil partnership, a share 68% of UK towns don’t reach
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
Little separates the share of unpaid carers here, 8.8%, from the figure across England’s towns. For comparison, 44% of adults are married or in a civil partnership across England’s towns. On the census count, just over a third of adults have never married or formed a civil partnership.
33% of adults have a degree-level qualification
Highest qualification, residents 16 and over, Census 2021.
Highest qualification · residents 16 and over
Across England’s towns, 34% of adults have a degree-level qualification; in Sepham Heath, 33%, and 12% have none, against 18%.
Sepham Heath and its 7 nearest towns: 6 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 |
|---|---|---|---|---|---|
| Sepham Heath | 378 | — | 39.9 | 19% | 40% |
| Dunton Green | 3,241 | 1.9 mi | 36.3 | 12% | 34% |
| Otford and Kemsing | 7,332 | 2.2 mi | 46.4 | 23% | 33% |
| Sundridge | 1,190 | 2.9 mi | 46.4 | 22% | 28% |
| Sevenoaks | 26,474 | 3 mi | 42 | 18% | 36% |
| Seal | 1,616 | 3.5 mi | 45.1 | 22% | 31% |
| Eynsford | 1,676 | 4.3 mi | 51.3 | 27% | 23% |
| Crockenhill | 1,569 | 4.4 mi | 46.8 | 24% | 24% |
Health, work and homes have their own pages
What this data can and can’t tell you
- “Kent’s towns” and “England’s towns” mean their built-up areas. Census comparisons pool every built-up area in Kent (or England), summed the same way as Sepham Heath’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 Sepham Heath’s residents
What is the population of Sepham Heath?
The 2021 Census counted 378 people in Sepham Heath’s built-up area.
What is the average age in Sepham Heath?
The median age was 39.9 at the 2021 Census. 11% of residents were 15 to 24 and 19% were 65 or over.
How diverse is Sepham Heath?
88% of residents described themselves as White British in 2021, against 73% across England’s towns and 82% across Kent’s towns. 8.8% were born outside the UK.
What religion are people in Sepham Heath?
48% said they had no religion and 46% that they were Christian at the 2021 Census; 0% were Muslim and 5.3% didn’t answer.
Is Sepham Heath good for families?
40% of households had dependent children in 2021, against 29% across England’s towns. Schools are on Sepham Heath’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.