Photo: Paul Franks · CC BY-SA 2.0Half of Seawick is over 54.9, older than 97% of UK towns
With one-person households at 48%, Seawick is ahead of 99% of UK towns on that count. The village is home to 263 residents in 149 households, by the 2021 Census. The share of households with dependent children stands at 15%. More residents who describe themselves as Christian than in 90% of UK towns: 58%.
Below 99% of UK towns: 5.8% of residents are aged 15 to 24
Share of residents in each five-year age band, Census 2021.
The largest age band is 50–54: just over one in ten residents, 1.6 times the share across England’s towns. Against that, 12% of residents are aged 15 to 24 across England’s towns. 31% of residents are 65 or over.
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.
Below 99% of UK towns: 1.7% of adults are full-time students
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%.
11% of residents lived at another address a year earlier across England’s towns, against 12% in Seawick. By way of comparison, 7.9% of adults are full-time students across England’s towns.
1.7 people per household, fewer than in 99% of UK towns
Household make-up at the 2021 Census. Each square is 1% of households.
Against Essex’s towns and England’s towns
People per household
England’s towns.
Shared households of unrelated adults: 2% here and 4.3% across England’s towns.
Fewer households in terraced houses than 89% of UK towns: 10%
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 detached houses is 36%, against 21% across England’s towns. Measured more widely, nearly a quarter of households live in a terraced house across England’s towns. Households without a car or van account for 22%.
A larger share of residents whose main language is English than 93% of UK towns: 99%
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
Across England’s towns the share born abroad is 18%; in Seawick it is 4.6%. For comparison, nine in ten residents have English as their main language across England’s towns. Residents born abroad were most often born in EU countries (2.7%), then in Africa (1.5%).
A higher share of residents who describe themselves as White British than 81% of UK towns, at 95%
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 Seawick · Essex’s towns 83% · England’s towns 73%.
Religion · all residents
Here 36% of residents said they have no religion, where the figure across England’s towns is 37%. Measured more widely, 73% of residents describe themselves as White British across England’s towns. After White British, the most common groups are Other White (3.8%), Indian (0.4%) and African (0.4%).
Unpaid carers make up 18% in Seawick, more than in 99% 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
Just over a third of adults are married or in a civil partnership, against 44% across England’s towns. The usual figure: nearly one in ten residents give unpaid care across England’s towns. The census found that 31% of adults have never married or formed a civil partnership in Seawick.
Adults qualified to degree level or above: 23%
Highest qualification, residents 16 and over, Census 2021.
Highest qualification · residents 16 and over
23% of Seawick’s adults have a degree-level qualification, against 34% across England’s towns; 32% have none (18%).
Seawick is younger than 2 of its 7 nearest neighbours
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 |
|---|---|---|---|---|---|
| Seawick | 263 | — | 54.9 | 31% | 15% |
| Jaywick | 5,080 | 1.4 mi | 58 | 38% | 13% |
| St Osyth | 2,249 | 1.7 mi | 53.5 | 33% | 20% |
| Point Clear | 1,707 | 2.2 mi | 55.6 | 34% | 17% |
| Clacton-on-Sea | 53,190 | 3.3 mi | 50.4 | 30% | 22% |
| Brightlingsea | 8,678 | 3.6 mi | 49.9 | 28% | 24% |
| Little Clacton | 2,458 | 4.3 mi | 54 | 33% | 22% |
| Thorrington | 1,427 | 4.9 mi | 52.1 | 31% | 25% |
Health, work and homes have their own pages
What this data can and can’t tell you
- “Essex’s towns” and “England’s towns” mean their built-up areas. Census comparisons pool every built-up area in Essex (or England), summed the same way as Seawick’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 Seawick’s residents
What is the population of Seawick?
The 2021 Census counted 263 people in Seawick’s built-up area.
What is the average age in Seawick?
The median age was 54.9 at the 2021 Census. 5.8% of residents were 15 to 24 and 31% were 65 or over.
How diverse is Seawick?
95% of residents described themselves as White British in 2021, against 73% across England’s towns and 83% across Essex’s towns. 4.6% were born outside the UK.
What religion are people in Seawick?
36% said they had no religion and 58% that they were Christian at the 2021 Census; 0% were Muslim and 5.8% didn’t answer.
Is Seawick good for families?
15% of households had dependent children in 2021, against 29% across England’s towns. Schools are on Seawick’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.