4.2% of households rent social housing (HLM), below 90% of compared French towns
Households without a car make up 6%, against 11% in the typical compared French town. Census figures put residents aged 15 to 24 at 8.3% in Chazey-sur-Ain. On households headed by a retired person, Chazey-sur-Ain sits lower than four fifths of compared French towns: 26%. The town is home to 1,632 residents in 730 households, by the 2023 Census.
Throughout this page, the Ain 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.
Chazey-sur-Ain grew +5% from 2012 to 2023, faster than 50% 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 those years, the median Ain town changed +13% and the median compared French town +5%. Between 2012 and 2017 the population moved −3%, then +8% to 2023.
A smaller share of residents aged 65 and over than 82% of compared French towns: 17%
Shares of residents by age at the 2023 census.
Age groups · share of residents
Median age of the 3,798 compared French towns
■ Chazey-sur-Ain 42.3. The median compared French town: 44.
Half of Chazey-sur-Ain’s residents are under 42.3, younger than in 64% of compared French towns. Elsewhere, 22% of residents are 65 or over in the typical compared French town.
Women and men · all residents
50% women, 50% men
About an even split. Median share of women: Ain 51.0%, France 51.8%.
A higher share of single-parent households than 76% of compared French towns, at 12%
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 Ain median and the France median
Living alone · share
The typical household size is 2.2 people. A third of households are one person living alone, or about one in three. The benchmark for single-parent households in the typical compared French town: 10%.
A lower share of empty homes than 86% of compared French towns, at 4.1%
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
Compared with 2.1% in the typical compared French town, 3.3% of homes are second homes here. The comparison figure for empty homes is 6.7% in the typical compared French town. In Chazey-sur-Ain, 17% of homes are flats.
A median standard of living of €29,610 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.
The median standard of living in Chazey-sur-Ain is €29,610 a year per consumption unit: higher than in 82% of compared French towns.
A larger share of households headed by a manager or professional than 77% of compared French towns: 15%
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, 15% of households are headed by a manual worker in Chazey-sur-Ain. As a reference point, 9.4% of households are headed by a manager or professional in the typical compared French town.
Each household is counted once, by the occupation of its reference person (usually the oldest working adult).
Foreign nationals make up 1.3% in Chazey-sur-Ain, less than in 89% 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.
With immigrants at 3.3%, Chazey-sur-Ain is behind nearly four fifths of compared French towns on that count. The usual figure: 4.3% of residents are foreign nationals 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.
Only 21% of residents 15 and over are single in Chazey-sur-Ain
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: 46%, above nearly three quarters of compared French towns. The wider picture: 25% of residents 15 and over are single in the typical compared French town.
Adults with no qualification: 17%, a lower share than 64% 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
Across Chazey-sur-Ain, 30% of adults out of school hold a higher-education qualification. On average, nearly a fifth of adults out of school have no qualification in the typical compared French town.
The 10th youngest of 41 French towns of 1,632 to 2,582 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 Villejust (37.2), the youngest, and Prayssac (62.3), the oldest.
1 of 6 neighbors are older than Chazey-sur-Ain
The nearest towns of 2,500 or more, colored by median age. Source: INSEE, census 2023.
| Town | Median age | 65+ | Second homes | Immigrants |
|---|---|---|---|---|
| Chazey-sur-Ain | 42.3 | 17% | 3.3% | 3.3% |
| Villieu-Loyes-Mollon 3,849 · 2.7 mi | 41.1 | 17% | 3.2% | 3.4% |
| Meximieux 8,247 · 3.3 mi | 39 | 18% | 2.2% | 7.5% |
| Lagnieu 7,411 · 3.8 mi | 43.1 | 23% | 2.1% | 7.3% |
| Ambérieu-en-Bugey 15,934 · 6.2 mi | 37.5 | 18% | 1.4% | 13% |
| Saint-Maurice-de-Gourdans 2,903 · 6.5 mi | 41.6 | 16% | 3.7% | 2.8% |
| Béligneux 3,535 · 6.9 mi | 36.7 | 16% | 1.3% | 6.4% |
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 Chazey-sur-Ain
What is the population of Chazey-sur-Ain?
1,632 at INSEE’s 2023 census, 5% more than in 2012 (1,555).
How old are Chazey-sur-Ain’s residents?
The median age is 42.3, younger than 64% of compared French towns. 21% are under 18 and 17% 65 or older.
How many second homes are there in Chazey-sur-Ain?
26, with occasional dwellings: 3.3% of all homes, against 2.1% for the median compared French town.
How many immigrants live in Chazey-sur-Ain?
INSEE counts 54 immigrants (born abroad, not French at birth), 3.3% of residents, and 22 foreign nationals (1.3%). The medians of compared French towns are 6.5% and 4.3%.
What is the median income in Chazey-sur-Ain?
€29,610 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.