Sinnamary is younger than 99% of compared French towns: a median age of 31
Compared with 9.4% in the typical compared French town, 2.2% of households are headed by a manager or professional here. 28% of households are one person living alone, a lower share than in 84% of compared French towns. The 2023 Census put Sinnamary’s population at 2,756, in 930 households. Households without a car: 45% of the total.
Throughout this page, the French Guiana 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 Sinnamary
Immigrants
INSEE counts 900 immigrants in Sinnamary (people born abroad who weren’t French at birth, whatever their nationality now): 32% of residents, against – for the median compared commune in French Guiana. 37% are foreign nationals. Immigrants and foreign nationals ↓
A young town
Half of Sinnamary’s residents are under 31 and half over; the median of compared French towns is 44. 29% are under 15 and 11% are 65 or older. Ages ↓
Fewer residents than in 2012
Sinnamary had 3,088 residents at the 2012 census and 2,756 in 2023, down 11%: slower growth than in 98% of compared French towns. Population ↓
Empty homes
The census found 200 homes empty (17%): for sale, to let, awaiting work or simply unused. Homes & cars ↓
Written from INSEE’s census 2023 on this page, against compared French towns.
Slower than most: −11% since 2012, behind 98% 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
The years 2012 to 2017 brought −5%; 2017 to 2023, −6%.
11% of residents are 65 or over, below 98% 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
■ Sinnamary 31. The median compared French town: 44.
15% of residents are 15 to 24 (typical compared French town: 11%). As a yardstick, 22% of residents are 65 or over in the typical compared French town.
Women and men · all residents
52% women, 48% men
About 91 men for every 100 women. Median share of women: France 51.8%.
A higher share of single-parent households than 99% of compared French towns, at 25%
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 French Guiana median and the France median
Living alone · share
29% of households are couples with children, against 25% in the median compared French town; 25% are single parents with their children (10%). Each household has 2.9 people on average.
Empty homes: 17%, a higher share than 97% 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
Second homes: 7%, above 83% of compared French towns. Census figures put households in social housing at 18% in Sinnamary. 14% of homes are flats, fewer than in 79% of compared French towns. By way of comparison, 6.7% of homes stand empty in the typical compared French town.
Households headed by a retired person: 17%, a lower share than 98% 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
Compared with 14% in the typical compared French town, 16% of households are headed by a manual worker here. In the typical compared French town, households headed by a retired person come to 32%.
Each household is counted once, by the occupation of its reference person (usually the oldest working adult).
32% of residents are immigrants, more than in 99% 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.
37% of residents are foreign nationals (typical compared French town: 4.3%). Immigrants make up 6.5% 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.
Sinnamary: 50% of residents 15 and over are single, above 99% 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
Married residents make up 25%, against 43% in the typical compared French town.
Fewer graduates of higher education than 99% of compared French towns: 12%
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
Adults with no qualification: 42% here and 19% in the typical compared French town. The usual figure: 30% of adults out of school hold a higher-education qualification in the typical compared French town.
The youngest of 41 French towns of 2,731 to 2,780 people
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 Sinnamary (31), the youngest, and Collioure (60.8), the oldest.
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 Sinnamary
What is the population of Sinnamary?
2,756 at INSEE’s 2023 census, 11% fewer than in 2012 (3,088).
How old are Sinnamary’s residents?
The median age is 31, younger than 99% of compared French towns. 36% are under 18 and 11% 65 or older.
How many second homes are there in Sinnamary?
85, with occasional dwellings: 7% of all homes, against 2.1% for the median compared French town.
How many immigrants live in Sinnamary?
INSEE counts 870 immigrants (born abroad, not French at birth), 32% of residents, and 1,030 foreign nationals (37%). 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.