Cize is older than 91% of compared French towns: a median age of 53
Against a figure of 32% in the typical compared French town, the share of households headed by a retired person in Cize comes in at 42%. At the same time, at 0.5%, the share of households in social housing is lower than in 99% of compared French towns. There were 380 households here at the 2023 Census, home to 797 residents. Nearly one in ten homes are flats.
Throughout this page, the Jura 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 Cize
An older town
Half of Cize’s residents are under 53 and half over; the median of compared French towns is 44. 33% are 65 or older (France median 22%), 6.8% 80 or older. Ages ↓
Written from INSEE’s census 2023 on this page, against compared French towns.
Slower growth than 74% of compared French towns: Cize changed by −1% since 2012
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, −2% to 2017 and +1% after, the town’s change compares with +5% for the median compared French town and −4% in Jura.
Residents aged 15 to 24 make up 7.6% in Cize, less than in 95% 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
■ Cize 53. The median compared French town: 44.
Residents aged 65 and over: 33%, above 92% of compared French towns. Elsewhere, 11% of residents are 15 to 24 in the typical compared French town.
Women and men · all residents
50% women, 50% men
About an even split. Median share of women: Jura 52.0%, France 51.8%.
Cize sits below 82% of compared French towns for one-person households (29%)
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 Jura median and the France median
Living alone · share
With couples with children at 21%, Cize is behind 71% of compared French towns on that count. Each household has 2.1 people on average. Compared with other places, single-parent households are scarce here: 9.4%, fewer than in three fifths of compared French towns. As a reference point, just over a third of households are one person living alone in the typical compared French town.
5.7% of households have no car, below 82% 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
Little separates the share of second homes here, 1.2%, from the figure in the typical compared French town. For comparison, 11% of households have no car in the typical compared French town. Across Cize, 4.5% of homes stand empty.
Half of residents have a standard of living above €28,070 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 €28,070 a year per consumption unit and half below; the level is higher than in 71% of compared French towns.
A smaller share of households headed by a manager or professional than 98% of compared French towns: 2.6%
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
Compared with 14% in the typical compared French town, 24% of households are headed by a manual worker here. For households headed by a manager or professional, the comparison in the typical compared French town is 9.4%.
Each household is counted once, by the occupation of its reference person (usually the oldest working adult).
Below 73% of compared French towns: 2.4% of residents are foreign nationals
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.
4.7% of residents are immigrants, against 6.5% in the typical compared French town. The median compared commune in Jura has 7.6%; immigrants here make up a share lower than in nearly two thirds of compared French towns. The comparison figure for foreign nationals is 4.3% 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.
Fewer single residents than 99% of compared French towns: 16%
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 is 51%, against 43% in the typical compared French town. Typically, a quarter of residents 15 and over are single in the typical compared French town.
Graduates of higher education: 23%, a lower share than 74% 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
Compared with 19% in the typical compared French town, 24% of adults out of school have no qualification here. Measured more widely, 30% of adults out of school hold a higher-education qualification in the typical compared French town.
Of 41 French towns its size (797 to 2,582 people), the 7th 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.
The youngest is Villejust (37.2), the oldest Prayssac (62.3).
1 in 5 nearby towns have a higher median age than Cize
The nearest towns of 2,500 or more, colored by median age. Source: INSEE, census 2023.
| Town | Median age | 65+ | Second homes | Immigrants |
|---|---|---|---|---|
| Cize | 53 | 33% | 1.2% | 4.7% |
| Champagnole 8,036 · 1.1 mi | 50.7 | 31% | 1.5% | 7.9% |
| Poligny 3,976 · 12.2 mi | 46.4 | 28% | 5.2% | 7.6% |
| Arbois 3,114 · 13.7 mi | 55 | 35% | 6.1% | 5.1% |
| Hauts de Bienne 5,032 · 15.4 mi | 39.5 | 17% | 6.8% | 20% |
| Lons-le-Saunier 16,618 · 17.1 mi | 47.2 | 28% | 5.4% | 12% |
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 Cize
What is the population of Cize?
797 at INSEE’s 2023 census, about the same as in 2012 (804).
How old are Cize’s residents?
The median age is 53, older than 91% of compared French towns. 18% are under 18 and 33% 65 or older.
How many second homes are there in Cize?
5, with occasional dwellings: 1.2% of all homes, against 2.1% for the median compared French town.
How many immigrants live in Cize?
INSEE counts 38 immigrants (born abroad, not French at birth), 4.7% of residents, and 19 foreign nationals (2.4%). The medians of compared French towns are 6.5% and 4.3%.
What is the median income in Cize?
€28,070 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.