Photo: Chabe01 · CC BY-SA 4.0Chambourcy carries more debt per resident than 89% of compared communes
Pierre Morange has been mayor of Chambourcy since March 26, 2026, elected by the 29 members of the municipal council. A single list stood in March 2026, NOTRE PARTI C'EST CHAMBOURCY!, and took all 29 seats. Chambourcy is part of the Communauté d'agglomération Saint Germain Boucles de Seine.
March 2032
Councils are elected for six years; the council elects the mayor.
Register to vote ↗Throughout this page, the median in Yvelines and the France median are the median of compared communes (those with an overall grade), each figure its own median.
What stands out about Chambourcy’s town hall
A single list
Only one list stood in Chambourcy on March 15, 2026: NOTRE PARTI C'EST CHAMBOURCY!. It took all 29 seats; with no rival list, voters could only vote for it, cast a blank ballot or stay at home. 2026 elections ↓
Turnout below most communes
45.5% of registered voters in Chambourcy voted on March 15, 2026: lower than in 88% of compared French communes. The median of compared communes in Yvelines was 56.2%; across France, 57.4%. 2026 elections ↓
More debt per resident than most
Chambourcy owed €9.2M at the end of 2025, €1,533 per resident: higher than in 89% of compared French communes (France median €748). That equals 77% of a year’s running costs. The commune’s money ↓
A big year for investment
Chambourcy invested €707 per resident (buildings, roads, equipment), 26% of its spending: higher than in 83% of compared French communes (France median €403). Investment swings from year to year with projects. The commune’s money ↓
Results as the Interior ministry published them; accounts from the DGFiP via OFGL. Nothing here is graded.
The council the voters chose
Seats as the March 2026 results gave them, one dot a seat.
- NOTRE PARTI C'EST CHAMBOURCY!292 community seats
As elected in the first round, March 15, 2026.
The list that comes first gets half the seats; the rest are shared in proportion among the lists with 5% or more, the winner included. So the winning list always has a majority. The same vote gave Chambourcy 2 seats on the council of the Communauté d'agglomération Saint Germain Boucles de Seine (community seats).
Source: Interior ministry, 2026 municipal election results (March 15 and 22), subject to corrections and appeals.
4 authorities share the work
The commune is the tier closest to residents; the intercommunality, the département and the région do the rest.
Births, marriages and deaths, the electoral roll, nursery and primary schools, local roads, planning permission, the municipal police, and what else the council takes on.
Mayor: Pierre Morange · 29 councilors
The services its communes share: usually waste collection, economic development and planning documents; often water and local buses.
Social aid (RSA, care for older and disabled people, child protection), collèges, the département’s roads, and funding for fire and rescue.
Lycées, regional trains (TER) and coaches, economic development and job training.
Who to ask
The usual split of powers (service-public.fr); an intercommunality’s exact remit varies, so check its website for waste, water and buses.
Membership: COG 2026 (INSEE); intercommunality type: BANATIC, January 2025. What each tier does: service-public.fr.
From the mayor to the intercommunality
The officials as the Interior ministry’s register lists them, and the council by list.
- 1Mayorsince March 26, 2026Pierre Morange
- 2Deputy mayors8 adjoints, elected by the councilBernard FerruCaroline DoucetDidier GuinaudieFrançoise HeppMichel LepertLeïla HssainaChristophe PriouxArmelle Lejay
- 3Chambourcy municipal council29 seats by listNOTRE PARTI C'EST CHAMBOURCY! 29
- 4Communauté d'agglomération Saint Germain Boucles de SeineChambourcy holds 2 seatsCommunity councilors are drawn from the council lists in the same vote.
Source: Interior ministry, national register of elected officials (RNE), August 11, 2026.
The 29 members of the Chambourcy municipal council
The mayor and 8 deputy mayors first, then the councilors.
| Name | Office | Since |
|---|---|---|
| Pierre Morange | Maire | March 26, 2026 |
| Bernard Ferru | 1er adjoint au Maire | March 26, 2026 |
| Caroline Doucet | 2ème adjoint au Maire | March 26, 2026 |
| Didier Guinaudie | 3ème adjoint au Maire | March 26, 2026 |
| Françoise Hepp | 4ème adjoint au Maire | March 26, 2026 |
| Michel Lepert | 5ème adjoint au Maire | March 15, 2026 |
| Leïla Hssaina | 6ème adjoint au Maire | March 26, 2026 |
| Christophe Prioux | 7ème adjoint au Maire | March 26, 2026 |
| Armelle Lejay | 8ème adjoint au Maire | March 26, 2026 |
Show the full council (29)
| Name | Office | Since |
|---|---|---|
| Pierre Morange | Maire | March 26, 2026 |
| Bernard Ferru | 1er adjoint au Maire | March 26, 2026 |
| Caroline Doucet | 2ème adjoint au Maire | March 26, 2026 |
| Didier Guinaudie | 3ème adjoint au Maire | March 26, 2026 |
| Françoise Hepp | 4ème adjoint au Maire | March 26, 2026 |
| Michel Lepert | 5ème adjoint au Maire | March 15, 2026 |
| Leïla Hssaina | 6ème adjoint au Maire | March 26, 2026 |
| Christophe Prioux | 7ème adjoint au Maire | March 26, 2026 |
| Armelle Lejay | 8ème adjoint au Maire | March 26, 2026 |
| Jean-Louis Albizzati | Conseiller municipal | March 15, 2026 |
| François Alzina | Conseiller municipal | March 15, 2026 |
| Steve Bochinger | Conseiller municipal | March 15, 2026 |
| Betty Brayer | Conseiller municipal | March 15, 2026 |
| Marie-Françoise Clavel | Conseiller municipal | March 15, 2026 |
| Albane de Thierrens | Conseiller municipal | March 15, 2026 |
| Valentin Douchez | Conseiller municipal | March 15, 2026 |
| Marina Durand-Viel | Conseiller municipal | March 15, 2026 |
| Françoise Hassan | Conseiller municipal | March 15, 2026 |
| Yann Huser | Conseiller municipal | March 15, 2026 |
| Valérie Ke | Conseiller municipal | March 15, 2026 |
| Simon Larcher | Conseiller municipal | March 15, 2026 |
| Jean-Claude Lemoult | Conseiller municipal | March 15, 2026 |
| Fabienne Mahe-Bies | Conseiller municipal | March 15, 2026 |
| Carine Paix | Conseiller municipal | March 15, 2026 |
| Sonia Pinheiro | Conseiller municipal | March 15, 2026 |
| Emmanuel Puiseux | Conseiller municipal | March 15, 2026 |
| Jean-François Rambicur | Conseiller municipal | March 15, 2026 |
| Jacques Rivet | Conseiller municipal | March 15, 2026 |
| Marie-Pascale Tuvi | Conseiller municipal | March 15, 2026 |
Names and offices as the Interior ministry’s national register of elected officials (RNE) published them on August 11, 2026, written as it writes them. Public role only. Later resignations and replacements aren’t shown.
The council: same source as Who represents Chambourcy, above.
How Chambourcy voted in March 2026
A single list stood.
1,813 votes cast for a list
1,970 of 4,331 registered voters in Chambourcy voted.
110 blank and 47 spoilt ballots, not counted in the shares.
Turnout, first round · March 15, 2026
Shares are of the votes cast for a list, leaving out blank and spoilt ballots. Lists in vote order; the colors only tell the lists apart.
2026 elections: same source as Who’s in charge, above.
Chambourcy spends €2,695 per resident a year
The commune’s consolidated accounts: main and annexed budgets, transfers between them removed.
Per resident, 2025 · against compared communes
Spending and debt per resident, 2018 to 2025
Chambourcy owed €9.2M at the end of 2025, €1,533 per resident, higher than in 89% of compared French communes, equal to 77% of a year’s running costs.
Show year by year
| Year | Spending | Investment | Debt | Debt in all |
|---|---|---|---|---|
| 2025 | €2,695 | €707 | €1,533 | €9.2M |
| 2024 | €2,604 | €786 | €1,730 | €10.2M |
| 2023 | €2,133 | €332 | €1,919 | €11.1M |
| 2022 | €1,884 | €244 | €2,733 | €15.7M |
| 2021 | €1,847 | €271 | €2,898 | €16.7M |
| 2020 | €2,039 | €389 | €3,057 | €17.7M |
| 2019 | €2,494 | €924 | €2,954 | €17.1M |
| 2018 | €2,353 | €833 | €2,917 | €17.1M |
Source: OFGL, consolidated commune accounts 2018–2025 (DGFiP); 2025 provisional.
The 7th highest debt per resident of 41 communes its size
The 40 compared communes nearest in population, debt per resident at the end of 2025.
Lowest: Ludres, €32. Highest: Lannemezan, €3,356.
Have a say in Chambourcy
French citizens register online or at the town hall; citizens of other EU countries can vote in municipal elections too.
service-public.fr ↗See where you’re registered and which polling station is yours.
service-public.fr ↗Council meetings are public; the agenda and minutes are posted at the town hall and usually on its website.
service-public.fr ↗Opening hours, address and phone number of the mairie of Chambourcy in the public services directory.
lannuaire.service-public.fr ↗Who can stand, how lists are formed and the deadlines, from the Interior ministry.
interieur.gouv.fr ↗What this data can and can’t tell you
- Mayors and councilors. From the Interior ministry’s national register of elected officials (RNE) as published on August 11, 2026: name, office and start dates, nothing else. The register counts a mayor as a councilor too; the page counts each person once. It isn’t a live roll: resignations and replacements after that date aren’t shown, and no party is inferred for any official.
- How the council is elected. Since March 2026 every commune elects its council from lists (a 2025 law extended list voting to communes under 1,000). A list with more than half the votes in the first round wins; otherwise lists with 10% or more can go on to a second round, where the list ahead wins. It gets half the seats, and the rest are shared in proportion among lists with 5% or more. The council then elects the mayor and the deputy mayors.
- The label beside a list. The political nuance the prefecture gave the list for the ministry’s results (Divers droite, Union de la gauche…), shown as published. It isn’t the list’s own description; many lists, most in small communes, have none.
- The commune’s money. OFGL’s consolidated accounts from the DGFiP, 2018 to 2025; 2025 is provisional. Spending and investment leave out loan repayments; running costs are part of spending. Debt is what was owed at the end of the year.
- Per resident. Divided by the DGFiP’s population for that year (population totale, which counts some people, such as boarding students, in two communes), so it can differ from the census figure elsewhere on the site.
- The medians. Beside the town’s figure, the median of compared communes in its département and in France (those with an overall grade). A commune’s spending follows its size and its role: one that runs a pool or a theater for the villages around it spends more per resident.
Questions about Chambourcy’s town hall
Who is the mayor of Chambourcy?
Pierre Morange, mayor since March 26, 2026, according to the Interior ministry’s register of elected officials (August 11, 2026).
How many councilors does Chambourcy have?
The Chambourcy municipal council has 29 members, the mayor and 8 deputy mayors included.
Who won the 2026 municipal elections in Chambourcy?
Only one list stood: NOTRE PARTI C'EST CHAMBOURCY!, which took all 29 seats.
What was the turnout in Chambourcy?
45.5% of registered voters voted in the first round on March 15, 2026; the median of compared French communes was 57.4%.
When are the next municipal elections in Chambourcy?
Councils are elected for six years, so the next general municipal elections are due in March 2032. A council can be re-elected sooner if it loses too many members.
How much debt does Chambourcy have?
€9.2M at the end of 2025, €1,533 per resident; the median of compared French communes was €748.
Which intercommunality is Chambourcy part of?
Chambourcy is part of the Communauté d'agglomération Saint Germain Boucles de Seine, which runs the services its communes share.
Sources: Interior ministry RNE, August 11, 2026 · Interior ministry, municipal results 2026 · OFGL consolidated commune accounts 2018–2025 · INSEE COG 2026 and BANATIC (January 2025) for the intercommunality. 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.