Households headed by a manual worker make up 23% in Trignac, more than in 92% of compared French towns
Nearly a fifth of households rent social housing (HLM), against 12% in the typical compared French town. Fewer single-parent households than in nearly three quarters of compared French towns: 8.5%. The 2023 Census counted 8,397 residents in 3,750 households. For Trignac, the census puts flats at 27%.
Throughout this page, the Loire-Atlantique 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 Trignac
Growing fast
Trignac had 7,153 residents at the 2012 census and 8,397 in 2023, up 17%: faster growth than in 86% of compared French towns. Population ↓
Written from INSEE’s census 2023 on this page, against compared French towns.
Trignac’s population changed by +17% since 2012, more than in 86% 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
Over the whole period the median compared French town changed +5%, and the median Loire-Atlantique town +14%. The years 2012 to 2017 brought +10%; 2017 to 2023, +7%.
Younger than 58% of compared French towns: half of Trignac is under 42.9
Shares of residents by age at the 2023 census.
Age groups · share of residents
Median age of the 3,798 compared French towns
■ Trignac 42.9. The median compared French town: 44.
Against a figure of 22% in the typical compared French town, the share of residents aged 65 and over in Trignac comes in at 21%. On the census count, just over one in ten residents are 15 to 24.
Women and men · all residents
51% women, 49% men
About 94 men for every 100 women. Median share of women: Loire-Atlantique 51.0%, France 51.8%.
Trignac: 36% of households are one person living alone, above 55% 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 Loire-Atlantique median and the France median
Living alone · share
A household here holds 2.2 people on average. In the typical compared French town, one-person households come to 35%. Against a figure of 25% in the typical compared French town, the share of couples with children in Trignac comes in at 26%.
72% of homes are houses
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
A fifth of households have been in place 30 years or more; 8% moved in within the last two years. Trignac has fewer empty homes than 63% of compared French towns, at 5.8%. Households without a car are about as common here as in the typical compared French town, at 11%.
Half above, half below €24,200 a year in 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.
At €24,200 a year per consumption unit, the median standard of living here is lower than in 69% of compared French towns. Residents below the poverty line make up 13.0%.
A smaller share of households headed by a manager or professional than 76% of compared French towns: 6%
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
In the typical compared French town, 32% of households are headed by a retired person; in Trignac, 30%. The benchmark for households headed by a manager or professional in the typical compared French town: 9.4%.
Each household is counted once, by the occupation of its reference person (usually the oldest working adult).
A larger share of foreign nationals than 62% of compared French towns: 5.7%
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.
Immigrants make up a share higher than in just over half of compared French towns; the median compared commune in Loire-Atlantique has 2.8%. The usual figure: 4.3% of residents are foreign nationals in the typical compared French town. For Trignac, the census puts immigrants at 6.6%.
INSEE publishes no country of birth or ethnicity by commune in these tables, and the census doesn’t ask about religion.
In Trignac, 40% of residents 15 and over are married, fewer than in 71% 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
Compared with 25% in the typical compared French town, 27% of residents 15 and over are single here. In the typical compared French town, the share of married residents is 43%.
A lower share of graduates of higher education than 82% of compared French towns, at 21%
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
Here, 18% of adults out of school have no qualification. The comparison figure for graduates of higher education is 30% in the typical compared French town.
16th lowest median age among 41 French towns of 8,268 to 8,519
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 Groslay (37.9), the youngest, and Saint-Gilles-Croix-de-Vie (63.7), the oldest.
5 in 6 nearby towns have a higher median age than Trignac
The nearest towns of 2,500 or more, colored by median age. Source: INSEE, census 2023.
| Town | Median age | 65+ | Second homes | Immigrants |
|---|---|---|---|---|
| Trignac | 42.9 | 21% | 2% | 6.6% |
| Montoir-de-Bretagne 7,282 · 2.7 mi | 41.4 | 20% | 1.1% | 3% |
| Saint-Nazaire 74,568 · 2.7 mi | 44.6 | 25% | 6.5% | 9.7% |
| Saint-Malo-de-Guersac 3,203 · 3.5 mi | 45.3 | 22% | 1.7% | 1.8% |
| Saint-Brevin-les-Pins 14,541 · 4.9 mi | 53.5 | 32% | 32% | 2.9% |
| Saint-Joachim 4,112 · 4.9 mi | 45.1 | 24% | 5.7% | 2.2% |
| Saint-André-des-Eaux 7,013 · 5.2 mi | 44.2 | 20% | 5.9% | 2.1% |
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 Trignac
What is the population of Trignac?
8,397 at INSEE’s 2023 census, 17% more than in 2012 (7,153).
How old are Trignac’s residents?
The median age is 42.9, younger than 58% of compared French towns. 22% are under 18 and 21% 65 or older.
How many second homes are there in Trignac?
83, with occasional dwellings: 2% of all homes, against 2.1% for the median compared French town.
How many immigrants live in Trignac?
INSEE counts 560 immigrants (born abroad, not French at birth), 6.6% of residents, and 480 foreign nationals (5.7%). The medians of compared French towns are 6.5% and 4.3%.
What is the median income in Trignac?
€24,200 a year per consumption unit in 2023 (median of compared French towns €25,970); 13.0% 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.