Above 90% of compared French towns: 43% of households are headed by a retired person
The figure for households in social housing is 20% in Duclair and 12% in the typical compared French town. For Duclair, the census puts residents aged 65 and over at 26%. Higher than in 83% of compared French towns: 11% of homes stand empty. The town had 3,996 residents in 1,860 households at the 2023 Census.
Throughout this page, the Seine-Maritime median and the France median are the median of compared communes (those with an overall grade), each figure its own median. Source: INSEE, census 2023.
−2% since 2012: slower than 79% of compared French towns
Residents at INSEE’s last three censuses, each recast in the 2026 commune boundaries. France has no yearly estimate by commune between censuses.
2012 to 2023
2017 to 2023
For comparison, the median compared French town changed +5% and the median Seine-Maritime town ±0%.
Half of Duclair is over 48.3, older than 76% of compared French towns
Shares of residents by age at the 2023 census.
Age groups · share of residents
Median age of the 3,798 compared French towns
■ Duclair 48.3. The median compared French town: 44.
About one in nine: that is how common residents aged 15 to 24 are in Duclair (11%).
Women and men · all residents
53% women, 47% men
About 88 men for every 100 women. Median share of women: Seine-Maritime 52.8%, France 51.8%. Women live longer than men, so towns with many older residents have more women.
A smaller share of couples with children than 66% of compared French towns: 22%
A household is everyone who shares a main home (résidence principale). Household types come from INSEE’s fuller sample of a quarter of census forms.
Against the Seine-Maritime median and the France median
Living alone · share
37% of households are one person living alone, against 35% in the typical compared French town. Against that, a quarter of households are couples with children in the typical compared French town. On average, 2.1 people share a household. At 9.2%, the share of single-parent households is lower than in 64% of compared French towns.
Duclair: 13% of households have no car, above 60% of compared French towns
Every home the census counted: main residences, second homes and occasional dwellings (INSEE counts them together), and empty homes. Owning and renting are on Cost of living.
All homes · share of homes
Type of home
Cars per household · share of households
Some 12% of households are newcomers of under two years, against 23% who have been there 30 years or more. Second homes account for 1.2%. In the typical compared French town, the share of households without a car is 11%.
€25,260 a year: the median standard of living
The standard of living (niveau de vie) is a household’s disposable income after taxes and benefits, divided by its consumption units (UC) to allow for its size and make-up: 1 for the first adult, 0.5 for each other person 14 or older, 0.3 for each child under 14.
Medians of compared communes. Source: INSEE, Filosofi 2023.
Half of Duclair’s residents live in households with a standard of living below €25,260 a year per consumption unit, and half above: lower than in 57% of compared French towns. Poverty touches 10.0% of residents.
13% of households are headed by a manual worker, below 53% of compared French towns
Households by the socio-professional group (PCS) of their reference person, INSEE’s own categories. Jobs and commuting are on the Work & commute page.
Households by reference person’s group · share of households
Locally, nearly one in ten households are headed by a manager or professional. Households headed by a manual worker: 14% in the typical compared French town, for comparison.
Each household is counted once, by the occupation of its reference person (usually the oldest working adult).
1.4% of residents are immigrants, below 97% of compared French towns
INSEE publishes two measures, which overlap but aren’t the same. Neither is the UK’s “born abroad”.
Share of residents · census 2023
Immigrant (immigré)
Born abroad, not French at birth. Someone stays an immigrant after becoming French. A French citizen born abroad (for example in Algeria before 1962) is not one.
Foreign national (étranger)
Not a French citizen today, wherever born. A child born in France to foreign parents can be a foreign national without being an immigrant.
The share of foreign nationals is 0.7%, against 4.3% in the typical compared French town. For comparison, 6.5% of residents are immigrants in the typical compared French town.
INSEE publishes no country of birth or ethnicity by commune in these tables, and the census doesn’t ask about religion.
Single residents: 22%, a lower share than 80% of compared French towns
Residents 15 and over by how they live: the census asks both the legal status and whether people live as a couple.
Residents 15 and over · share
In Duclair, 45% of residents 15 and over are married, beside 43% in the typical compared French town. The benchmark for single residents in the typical compared French town: 25%.
More adults with no qualification than 84% of compared French towns: 27%
Highest diploma of residents 15 and over who have left education, in French terms: the levels don’t map one-to-one to UK or U.S. ones.
Highest diploma · 15 and over, out of education
22% of Duclair’s residents 15 and over who have left education hold a higher-education diploma, against 30% in the median compared French town; 27% have no diploma (19%).
Ranked by age, 14th oldest of 41 French towns this size
The 40 compared French towns nearest in population, by median age. Hover for each one’s second homes and immigrants; click for its page.
Ages run from 37.2 in Le Plessis-Belleville to 66.9 in Vaux-sur-Mer.
1 in 6 nearby towns have a higher median age than Duclair
The nearest towns of 2,500 or more, colored by median age. Source: INSEE, census 2023.
| Town | Median age | 65+ | Second homes | Immigrants |
|---|---|---|---|---|
| Duclair | 48.3 | 26% | 1.2% | 1.4% |
| Le Trait 4,704 · 2.9 mi | 45.8 | 24% | 0.6% | 4.4% |
| Arelaune-en-Seine 2,546 · 5.1 mi | 46.1 | 25% | 3.3% | 1.3% |
| Barentin 12,022 · 5.4 mi | 42.1 | 21% | 0.8% | 3.3% |
| Pavilly 6,029 · 6.7 mi | 44.7 | 22% | 0.6% | 2% |
| Rives-en-Seine 4,002 · 7 mi | 50.1 | 28% | 3.3% | 2.4% |
| Maromme 10,957 · 7.4 mi | 42.9 | 24% | 0.8% | 8.2% |
Health, work, housing and schools
What this data can and can’t tell you
- Census 2023. INSEE’s census is a rolling survey: a fifth of small communes each year, 8% of homes in large ones each year. “2023” pools the surveys of 2021 to 2025, so the figures describe the town around 2023, not on one day.
- Medians of compared communes. The comparisons are the median of the département’s compared communes and of France’s (those with an overall grade), each figure its own median: not the total for the département or for France, which large cities pull towards their own figures.
- Immigrants and foreign nationals. INSEE’s two measures: an immigrant was born abroad without French nationality; a foreign national isn’t French today. Neither is a count of people born abroad, which INSEE doesn’t publish by commune.
- Second homes. Homes used for holidays or weekends, with occasional dwellings (kept for work, for example), which INSEE counts together. Their owners are counted where they live, not here.
- Standard of living. INSEE’s Filosofi: disposable income per consumption unit, from tax and benefit files, 2023. The poverty rate is the share of residents below 60% of France’s median. Not published for the smallest communes.
- What France doesn’t ask. The French census asks nothing about ethnicity, religion, language or health, so this page has no such section.
Questions about who lives in Duclair
What is the population of Duclair?
3,996 at INSEE’s 2023 census, 2% fewer than in 2012 (4,094).
How old are Duclair’s residents?
The median age is 48.3, older than 76% of compared French towns. 19% are under 18 and 26% 65 or older.
How many second homes are there in Duclair?
24, with occasional dwellings: 1.2% of all homes, against 2.1% for the median compared French town.
How many immigrants live in Duclair?
INSEE counts 55 immigrants (born abroad, not French at birth), 1.4% of residents, and 30 foreign nationals (0.7%). The medians of compared French towns are 6.5% and 4.3%.
What is the median income in Duclair?
€25,260 a year per consumption unit in 2023 (median of compared French towns €25,970); 10.0% of residents live below the poverty line. Source: INSEE, Filosofi.
Sources: INSEE, census 2023 (population, ages, households, homes, marital status, diplomas, immigrants, foreign nationals, employment), 2026 geography · INSEE, Filosofi 2023 (standard of living, poverty) · IGN Admin Express (boundaries) · Medians and percentiles: TownRatings, over compared French towns, updated November 9, 2026. Under the Licence Ouverte / Open Licence 2.0 (Etalab).
Contains public sector information under the Licence Ouverte / Open Licence 2.0 (Etalab): INSEE, DGFiP, the Interior Ministry’s statistics service (SSMSI), the Ministry of Education (DEPP), the Health Ministry’s statistics service (DREES) and the Housing Ministry (Carte des loyers). Commune boundaries: IGN Admin Express.