Residents aged 15 to 24 make up 6.1% in Castelfranc, less than in 99% of compared French towns
Flats: 9.4%, below 88% of compared French towns. Castelfranc has fewer single-parent households than 85% of compared French towns, at 7.5%. The 2023 Census put the town’s population at 428, in 200 households. Across Castelfranc, 2.5% of households are headed by a manager or professional.
Throughout this page, the Lot 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 Castelfranc
One home in four is a second home
The census counted 74 second homes and occasional dwellings in Castelfranc, 24% of its 310 homes: higher than in 94% of compared French towns. 99% of them are houses. Their owners live elsewhere, so they aren’t in the population figures on this page. Homes & cars ↓
Written from INSEE’s census 2023 on this page, against compared French towns.
Castelfranc ranks above 94% of compared French towns on second homes: 24%
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
The share of households without a car trails 88% of compared French towns: 4.9%. Roughly one in ten: just over one in ten homes stand empty. At 6.9%, the share of households in social housing is lower than in 77% of compared French towns. The usual figure: 2.1% of homes are second homes in the typical compared French town.
A +9% change since 2012: faster than 67% 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 Lot town −1%.
Half of Castelfranc is over 46.2, older than 65% 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
■ Castelfranc 46.2. The median compared French town: 44.
22% of residents are 65 or over in the typical compared French town, against 24% in Castelfranc.
Women and men · all residents
52% women, 48% men
About 94 men for every 100 women. Median share of women: Lot 53.3%, France 51.8%.
Above 78% of compared French towns: 42% of households are one person living alone
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 Lot median and the France median
Living alone · share
Each household has 2.1 people on average. At 20%, the share of couples with children is lower than in 73% of compared French towns. To put it in context, just over a third of households are one person living alone in the typical compared French town.
€25,490 a year is the median standard of living here
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 €25,490 a year per consumption unit, the median standard of living here is lower than in 55% of compared French towns.
Households headed by a retired person: 37%, a higher share than 76% 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
Set against 14% in the typical compared French town, one in ten households are headed by a manual worker in Castelfranc. As a yardstick, nearly a third 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).
A larger share of foreign nationals than 60% of compared French towns: 5.4%
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 about one in 15 here (6.8%). That is higher than in 52% of compared French towns; the median compared commune in Lot has 9.5%.
INSEE publishes no country of birth or ethnicity by commune in these tables, and the census doesn’t ask about religion.
19% of residents 15 and over are single, fewer than in 94% 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
The census found that 42% of residents 15 and over are married in Castelfranc. The benchmark for single residents in the typical compared French town: 25%.
Castelfranc sits below 91% of compared French towns for adults with no qualification (11%)
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
Graduates of higher education: 32%, above 58% of compared French towns. The comparison figure for adults with no qualification is 19% in the typical compared French town.
Of 41 French towns its size (428 to 2,582 people), the 18th oldest
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 Villejust to 62.3 in Prayssac.
No nearby town is as young as Castelfranc
The nearest towns of 2,500 or more, colored by median age. Source: INSEE, census 2023.
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 Castelfranc
What is the population of Castelfranc?
428 at INSEE’s 2023 census, 9% more than in 2012 (392).
How old are Castelfranc’s residents?
The median age is 46.2, older than 65% of compared French towns. 23% are under 18 and 24% 65 or older.
How many second homes are there in Castelfranc?
74, with occasional dwellings: 24% of all homes, against 2.1% for the median compared French town.
How many immigrants live in Castelfranc?
INSEE counts 29 immigrants (born abroad, not French at birth), 6.8% of residents, and 23 foreign nationals (5.4%). The medians of compared French towns are 6.5% and 4.3%.
What is the median income in Castelfranc?
€25,490 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 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.