24% of households are single parents, more than in 99% of compared French towns
One in ten households are headed by a manual worker, against 14% in the typical compared French town. Ducos had 18,105 residents in 7,940 households at the 2023 Census. The census found that 15% of households have no car locally. More flats than in 60% of compared French towns: 37%.
Throughout this page, the Martinique 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.
What stands out about the people of Ducos
Empty homes
The census found 1,180 homes empty (13%): for sale, to let, awaiting work or simply unused. Homes & cars ↓
Written from INSEE’s census 2023 on this page, against compared French towns.
From 2012 to 2023, Ducos outgrew 56% of compared French towns: +6%
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
Here the change came as +2% to 2017, then +4% to 2023. Medians for comparison: +5% across compared French towns, ±0% in Martinique.
A median age of 44.7: Ducos is older than 55% 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
■ Ducos 44.7. The median compared French town: 44.
With residents aged 65 and over at 21%, Ducos is behind just over three fifths of compared French towns on that count. Few places have as many residents aged 15 to 24: 11% here, more than in three fifths of compared French towns.
Women and men · all residents
52% women, 48% men
About 94 men for every 100 women. Median share of women: France 51.8%.
In Ducos, 19% of households are couples with children, fewer than in 80% of compared French towns
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 Martinique median and the France median
Living alone · share
35% of households are one person living alone in the typical compared French town, against 37% in Ducos. Each household has 2.2 people on average. The benchmark for couples with children in the typical compared French town: 25%.
A larger share of empty homes than 90% of compared French towns: 13%
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
Against a figure of 12% in the typical compared French town, the share of households in social housing in Ducos comes in at 14%. The comparison figure for empty homes is 6.7% in the typical compared French town. Turnover: just over one in ten households moved in less than two years ago, and 23% have lived in their home 30 years or more. Second homes are more common here than in nearly three fifths of compared French towns.
Only 29% of households are headed by a retired person in Ducos
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
Census figures put households headed by a manager or professional at 8.8% in Ducos. For comparison, 32% of households are headed by a retired person in the typical compared French town.
Each household is counted once, by the occupation of its reference person (usually the oldest working adult).
Immigrants make up 2.9% in Ducos, less than in 83% 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.
Here 2.5% of residents are foreign nationals, where the figure in the typical compared French town is 4.3%. Immigrants: 6.5% in the typical compared French town, for comparison.
INSEE publishes no country of birth or ethnicity by commune in these tables, and the census doesn’t ask about religion.
Ducos ranks above 99% of compared French towns on single residents: 47%
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 the typical compared French town, the share of married residents is 43%; Ducos has 33%. The usual figure: a quarter of residents 15 and over are single in the typical compared French town.
Ducos: 33% of adults out of school hold a higher-education qualification, above 61% of compared French towns
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
The share of adults with no qualification stands at 20%. Set beside that, 30% of adults out of school hold a higher-education qualification in the typical compared French town.
10th highest median age among 41 French towns of 17,509 to 18,745
The 40 compared French towns nearest in population, by median age. Hover for each one’s second homes and immigrants; click for its page.
At the ends of the range sit Moissy-Cramayel (33.2), the youngest, and Sanary-sur-Mer (59.7), the oldest.
Around Ducos, 5 of 6 towns have a higher median age
The nearest towns of 2,500 or more, colored by median age. Source: INSEE, census 2023.
| Town | Median age | 65+ | Second homes | Immigrants |
|---|---|---|---|---|
| Ducos | 44.7 | 21% | 2.8% | 2.9% |
| Saint-Esprit 10,322 · 2.8 mi | 49.6 | 23% | 0.2% | 1% |
| Rivière-Salée 11,829 · 3.9 mi | 48.5 | 22% | 3.9% | 2.2% |
| Le Lamentin 39,400 · 4.2 mi | 44.6 | 19% | 1.6% | 3.1% |
| Le François 15,778 · 4.3 mi | 51.2 | 26% | 6.5% | 1.2% |
| Les Trois-Îlets 6,507 · 6 mi | 49 | 21% | 37% | 3.1% |
| Rivière-Pilote 11,604 · 6.4 mi | 51.4 | 24% | 10% | 1.2% |
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 Ducos
What is the population of Ducos?
18,105 at INSEE’s 2023 census, 6% more than in 2012 (17,039).
How old are Ducos’ residents?
The median age is 44.7, older than 55% of compared French towns. 20% are under 18 and 21% 65 or older.
How many second homes are there in Ducos?
260, with occasional dwellings: 2.8% of all homes, against 2.1% for the median compared French town.
How many immigrants live in Ducos?
INSEE counts 520 immigrants (born abroad, not French at birth), 2.9% of residents, and 450 foreign nationals (2.5%). The medians of compared French towns are 6.5% and 4.3%.
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 4, 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.