Poissy carries less debt per resident than 82% of compared communes
Sandrine Berno Dos Santos has been mayor of Poissy since March 22, 2026, elected by the 43 members of the municipal council. At the March 2026 municipal elections, ENSEMBLE POUR POISSY won 33 of the 43 seats in the second round on March 22, 2026, with 53% of the votes. Poissy is part of the Communauté urbaine Grand Paris Seine et Oise.
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 Poissy’s town hall
Decided in a second round
No list won half the votes in the first round, when 7 lists stood. In the second round on March 22, 2026, ENSEMBLE POUR POISSY came first with 53% and took 33 of the 43 seats; the other lists share the remaining 10. Who’s in charge ↓
Less debt per resident than most
Poissy owed €14.9M at the end of 2025, €363 per resident: lower than in 82% of compared French communes (France median €748). That equals 25% of a year’s running costs. 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.
- ENSEMBLE POUR POISSY339 community seats
- KO 2026102 community seats
As elected in the second round, March 22, 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 Poissy 11 seats on the council of the Communauté urbaine Grand Paris Seine et Oise (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: Sandrine Berno Dos Santos · 43 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 22, 2026Sandrine Berno Dos Santos
- 2Deputy mayors12 adjoints, elected by the councilKarine ContePatrick MeunierSamira TafatDavid LuceauAurélie RenardChristophe SimeoniVirginie MessmerMarc Lartigau+4 more
- 3Poissy municipal council43 seats by listENSEMBLE POUR POISSY 33 · KO 2026 10
- 4Communauté urbaine Grand Paris Seine et OisePoissy holds 11 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 43 members of the Poissy municipal council
The mayor and 12 deputy mayors first, then the councilors.
| Name | Office | Since |
|---|---|---|
| Sandrine Berno Dos Santos | Maire | March 22, 2026 |
| Karine Conte | 1er adjoint au Maire | March 22, 2026 |
| Patrick Meunier | 2ème adjoint au Maire | March 22, 2026 |
| Samira Tafat | 3ème adjoint au Maire | March 22, 2026 |
| David Luceau | 4ème adjoint au Maire | March 22, 2026 |
| Aurélie Renard | 5ème adjoint au Maire | March 22, 2026 |
| Christophe Simeoni | 6ème adjoint au Maire | March 22, 2026 |
| Virginie Messmer | 7ème adjoint au Maire | March 22, 2026 |
| Marc Lartigau | 8ème adjoint au Maire | March 22, 2026 |
| Hatice Barré | 9ème adjoint au Maire | March 22, 2026 |
| Karim Boukhiar | 10ème adjoint au Maire | March 22, 2026 |
| Larissa Guillemet | 11ème adjoint au Maire | March 22, 2026 |
| Calvin Bagland | 12ème adjoint au Maire | March 22, 2026 |
Show the full council (43)
| Name | Office | Since |
|---|---|---|
| Sandrine Berno Dos Santos | Maire | March 22, 2026 |
| Karine Conte | 1er adjoint au Maire | March 22, 2026 |
| Patrick Meunier | 2ème adjoint au Maire | March 22, 2026 |
| Samira Tafat | 3ème adjoint au Maire | March 22, 2026 |
| David Luceau | 4ème adjoint au Maire | March 22, 2026 |
| Aurélie Renard | 5ème adjoint au Maire | March 22, 2026 |
| Christophe Simeoni | 6ème adjoint au Maire | March 22, 2026 |
| Virginie Messmer | 7ème adjoint au Maire | March 22, 2026 |
| Marc Lartigau | 8ème adjoint au Maire | March 22, 2026 |
| Hatice Barré | 9ème adjoint au Maire | March 22, 2026 |
| Karim Boukhiar | 10ème adjoint au Maire | March 22, 2026 |
| Larissa Guillemet | 11ème adjoint au Maire | March 22, 2026 |
| Calvin Bagland | 12ème adjoint au Maire | March 22, 2026 |
| Celine Allouche | Conseiller municipal | March 22, 2026 |
| Nadyne Belvaude | Conseiller municipal | March 22, 2026 |
| Alain Dailly | Conseiller municipal | March 22, 2026 |
| Sabrina de Backer | Conseiller municipal | March 22, 2026 |
| Nelson de Jesus Pedro | Conseiller municipal | March 22, 2026 |
| Philippe Dompeyre | Conseiller municipal | March 22, 2026 |
| Karine Emonet-Villain | Conseiller municipal | March 22, 2026 |
| Claude Grappe | Conseiller municipal | March 22, 2026 |
| Berfine Guler | Conseiller municipal | March 22, 2026 |
| Victor Hazard | Conseiller municipal | March 22, 2026 |
| Vanessa Hubert | Conseiller municipal | March 22, 2026 |
| Jean-Pierre Jung | Conseiller municipal | March 22, 2026 |
| Patrick Karam | Conseiller municipal | March 22, 2026 |
| Désirée Koffi | Conseiller municipal | March 22, 2026 |
| Bertrand Lacoste | Conseiller municipal | March 22, 2026 |
| Béatrice Le Blay | Conseiller municipal | March 22, 2026 |
| Aude Le Gouguec | Conseiller municipal | March 22, 2026 |
| Guy Michel | Conseiller municipal | March 22, 2026 |
| Corinne Morvan | Conseiller municipal | March 22, 2026 |
| Fabrice Moulinet | Conseiller municipal | March 22, 2026 |
| Valèrie Nadreau | Conseiller municipal | March 22, 2026 |
| Jean-Jacques Nicot | Conseiller municipal | March 22, 2026 |
| Karl Olive | Conseiller municipal | March 22, 2026 |
| Éric Roger | Conseiller municipal | March 22, 2026 |
| Sandrine Ruhaud | Conseiller municipal | March 22, 2026 |
| Antoine Salamone | Conseiller municipal | March 22, 2026 |
| Stanislas Samuel | Conseiller municipal | March 22, 2026 |
| Aline Smaani | Conseiller municipal | March 22, 2026 |
| Elsa Soussi | Conseiller municipal | March 22, 2026 |
| Jonathan Tayar | Conseiller municipal | March 22, 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 Poissy, above.
How Poissy voted in March 2026
7 lists stood in the first round; none won half the votes, so a second round followed.
12,984 votes cast for a list
13,546 of 23,793 registered voters in Poissy voted.
395 blank and 167 spoilt ballots, not counted in the shares.
13,294 votes cast for a list · no seats given out: a second round followed
13,598 of 23,795 registered voters in Poissy voted.
177 blank and 127 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.
Poissy spends €1,937 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
Poissy owed €14.9M at the end of 2025, €363 per resident, lower than in 82% of compared French communes, equal to 25% of a year’s running costs.
Show year by year
| Year | Spending | Investment | Debt | Debt in all |
|---|---|---|---|---|
| 2025 | €1,937 | €460 | €363 | €14.9M |
| 2024 | €1,941 | €438 | €422 | €17M |
| 2023 | €1,794 | €338 | €474 | €19M |
| 2022 | €1,749 | €320 | €552 | €21.8M |
| 2021 | €1,838 | €424 | €636 | €24.6M |
| 2020 | €1,790 | €365 | €723 | €27.2M |
| 2019 | €1,887 | €380 | €805 | €30.2M |
| 2018 | €1,714 | €225 | €741 | €27.8M |
Source: OFGL, consolidated commune accounts 2018–2025 (DGFiP); 2025 provisional.
The 7th lowest debt per resident of 41 communes its size
The 40 compared communes nearest in population, debt per resident at the end of 2025.
Lowest: Marcq-en-Barœul, €0. Highest: Chartres, €4,713.
Have a say in Poissy
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 Poissy 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 Poissy’s town hall
Who is the mayor of Poissy?
Sandrine Berno Dos Santos, mayor since March 22, 2026, according to the Interior ministry’s register of elected officials (August 11, 2026).
How many councilors does Poissy have?
The Poissy municipal council has 43 members, the mayor and 12 deputy mayors included.
Who won the 2026 municipal elections in Poissy?
ENSEMBLE POUR POISSY, in the second round on March 22, 2026, with 53% of the votes; it holds 33 of the 43 seats.
What was the turnout in Poissy?
57.2% 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 Poissy?
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 Poissy have?
€14.9M at the end of 2025, €363 per resident; the median of compared French communes was €748.
Which intercommunality is Poissy part of?
Poissy is part of the Communauté urbaine Grand Paris Seine et Oise, 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.