A larger share of empty homes than 99% of compared French towns: 23%
In Saint-Diéry, 2% of households rent social housing (HLM), beside 12% in the typical compared French town. Residents aged 15 to 24 are rarer here than in 98% of compared French towns. The town is home to 546 residents in 250 households, by the 2023 Census. On the census count, just over a fifth of households are headed by a retired person.
Throughout this page, the Puy-de-Dôme 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 Saint-Diéry
One home in five is a second home
The census counted 85 second homes and occasional dwellings in Saint-Diéry, 19% of its 440 homes: higher than in 93% of compared French towns. 100% of them are houses. Their owners live elsewhere, so they aren’t in the population figures on this page. Homes & cars ↓
Empty homes
The census found 99 homes empty (23%): for sale, to let, awaiting work or simply unused. Homes & cars ↓
Growing fast
Saint-Diéry had 443 residents at the 2012 census and 546 in 2023, up 23%: faster growth than in 93% of compared French towns. Population ↓
Written from INSEE’s census 2023 on this page, against compared French towns.
Saint-Diéry ranks below 99% of compared French towns on flats: 1.8%
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
Set against 11% in the typical compared French town, 4% of households have no car in Saint-Diéry. For Saint-Diéry, the census puts second homes at 19%. Elsewhere, 30% of homes are flats in the typical compared French town.
A growing town: +23% since 2012, faster than 93% 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
In two steps, +12% to 2017 and +10% after, the town’s change compares with +5% for the median compared French town and +4% in Puy-de-Dôme.
Half of Saint-Diéry is over 46.4, older than 66% 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
■ Saint-Diéry 46.4. The median compared French town: 44.
Just over a fifth of residents are 65 or over (typical compared French town: 22%).
Women and men · all residents
51% women, 49% men
About an even split. Median share of women: Puy-de-Dôme 52.2%, France 51.8%.
14% of households are single parents, a share 90% of compared French towns don’t reach
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 Puy-de-Dôme median and the France median
Living alone · share
The average household has 2.2 people. Measured more widely, 10% of households are single parents in the typical compared French town. Nearly a quarter of households are couples with children; in the typical compared French town the figure is 25%.
Half of residents have a standard of living above €25,740 a year
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 residents live in households above €25,740 a year per consumption unit and half below; the level is lower than in 52% of compared French towns.
In Saint-Diéry, 20% of households are headed by a manual worker, more than in 82% 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
In the typical compared French town, 9.4% of households are headed by a manager or professional; in Saint-Diéry, 7.8%. Households headed by a manual worker make up 14% in the typical compared French town.
Each household is counted once, by the occupation of its reference person (usually the oldest working adult).
A lower share of immigrants than 95% of compared French towns, at 1.6%
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.
Against a figure of 4.3% in the typical compared French town, the share of foreign nationals in Saint-Diéry comes in at 1.1%. The median compared commune in Puy-de-Dôme has 5.9%; immigrants here make up a share lower than in 95% of compared French towns. As a yardstick, 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.
A lower share of single residents than 82% of compared French towns, at 22%
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
The share of married residents trails 78% of compared French towns: 38%. The benchmark for single residents in the typical compared French town: 25%.
Graduates of higher education: 24%, a lower share than 71% 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
17% of adults out of school have no qualification (typical compared French town: 19%). Set beside that, 30% of adults out of school hold a higher-education qualification in the typical compared French town.
Ranked by age, 18th 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.
The youngest is Villejust (37.2), the oldest Prayssac (62.3).
A younger town than 2 of the 6 around it: Saint-Diéry
The nearest towns of 2,500 or more, colored by median age. Source: INSEE, census 2023.
| Town | Median age | 65+ | Second homes | Immigrants |
|---|---|---|---|---|
| Saint-Diéry | 46.4 | 21% | 19% | 1.6% |
| Aydat 2,574 · 8.6 mi | 42.1 | 17% | 22% | 1.7% |
| Issoire 15,115 · 11.1 mi | 45.9 | 26% | 2% | 4.5% |
| Veyre-Monton 3,721 · 11.7 mi | 48.8 | 27% | 2% | 3.3% |
| Saint-Genès-Champanelle 4,066 · 12.4 mi | 41.5 | 18% | 3.7% | 2.2% |
| La Roche-Blanche 3,311 · 12.6 mi | 49.3 | 27% | 1.5% | 5.6% |
| Vic-le-Comte 5,396 · 12.6 mi | 44.7 | 22% | 2.5% | 4% |
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 Saint-Diéry
What is the population of Saint-Diéry?
546 at INSEE’s 2023 census, 23% more than in 2012 (443).
How old are Saint-Diéry’s residents?
The median age is 46.4, older than 66% of compared French towns. 24% are under 18 and 21% 65 or older.
How many second homes are there in Saint-Diéry?
85, with occasional dwellings: 19% of all homes, against 2.1% for the median compared French town.
How many immigrants live in Saint-Diéry?
INSEE counts 9 immigrants (born abroad, not French at birth), 1.6% of residents, and 6 foreign nationals (1.1%). The medians of compared French towns are 6.5% and 4.3%.
What is the median income in Saint-Diéry?
€25,740 a year per consumption unit in 2023 (median of compared French towns €25,970). 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.