How is Palaiseau run?
Grégoire de Lasteyrie has been mayor of Palaiseau since March 27, 2026, elected by the 39 members of the municipal council. At the March 2026 municipal elections, 100% Palaiseau avec Grégoire de Lasteyrie won 30 of the 39 seats in the second round on March 22, 2026, with 54.9% of the votes. Palaiseau is part of the Communauté d'agglomération Communauté Paris-Saclay.
March 2032
Councils are elected for six years; the council elects the mayor.
Register to vote ↗Throughout this page, the median in Essonne and the France median are the median of compared communes (those with an overall grade), each figure its own median.
The council the voters chose
Seats as the March 2026 results gave them, one dot a seat.
- 100% Palaiseau avec Grégoire de Lasteyrie307 community seats
- Rassembler Palaiseau92 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 Palaiseau 9 seats on the council of the Communauté d'agglomération Communauté Paris-Saclay (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: Grégoire de Lasteyrie · 39 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 27, 2026Grégoire de Lasteyrie
- 2Deputy mayors14 adjoints, elected by the councilHervé PailletDelphine PersonJean-Christophe DesbouvriesLeslie RobinetEchraf ManiNancy ColinGilles CordierMarie-Christine Graveleau+6 more
- 3Palaiseau municipal council39 seats by list100% Palaiseau avec Grégoire de Lasteyrie 30 · Rassembler Palaiseau 9
- 4Communauté d'agglomération Communauté Paris-SaclayPalaiseau holds 9 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 39 members of the Palaiseau municipal council
The mayor and 14 deputy mayors first, then the councilors.
| Name | Office | Since |
|---|---|---|
| Grégoire de Lasteyrie | Maire | March 27, 2026 |
| Hervé Paillet | 1er adjoint au Maire | March 27, 2026 |
| Delphine Person | 2ème adjoint au Maire | March 27, 2026 |
| Jean-Christophe Desbouvries | 3ème adjoint au Maire | March 27, 2026 |
| Leslie Robinet | 4ème adjoint au Maire | March 27, 2026 |
| Echraf Mani | 5ème adjoint au Maire | March 27, 2026 |
| Nancy Colin | 6ème adjoint au Maire | March 27, 2026 |
| Gilles Cordier | 7ème adjoint au Maire | March 27, 2026 |
| Marie-Christine Graveleau | 8ème adjoint au Maire | March 27, 2026 |
| Virgile Monnot | 9ème adjoint au Maire | March 27, 2026 |
| Samira Boukharmous | 10ème adjoint au Maire | March 27, 2026 |
| Guillaume Caristan | 11ème adjoint au Maire | March 27, 2026 |
| Régina Lahutte | 12ème adjoint au Maire | March 27, 2026 |
| Antoine Driard | 13ème adjoint au Maire | March 27, 2026 |
| Marion Blondeel | 14ème adjoint au Maire | March 27, 2026 |
Show the full council (39)
| Name | Office | Since |
|---|---|---|
| Grégoire de Lasteyrie | Maire | March 27, 2026 |
| Hervé Paillet | 1er adjoint au Maire | March 27, 2026 |
| Delphine Person | 2ème adjoint au Maire | March 27, 2026 |
| Jean-Christophe Desbouvries | 3ème adjoint au Maire | March 27, 2026 |
| Leslie Robinet | 4ème adjoint au Maire | March 27, 2026 |
| Echraf Mani | 5ème adjoint au Maire | March 27, 2026 |
| Nancy Colin | 6ème adjoint au Maire | March 27, 2026 |
| Gilles Cordier | 7ème adjoint au Maire | March 27, 2026 |
| Marie-Christine Graveleau | 8ème adjoint au Maire | March 27, 2026 |
| Virgile Monnot | 9ème adjoint au Maire | March 27, 2026 |
| Samira Boukharmous | 10ème adjoint au Maire | March 27, 2026 |
| Guillaume Caristan | 11ème adjoint au Maire | March 27, 2026 |
| Régina Lahutte | 12ème adjoint au Maire | March 27, 2026 |
| Antoine Driard | 13ème adjoint au Maire | March 27, 2026 |
| Marion Blondeel | 14ème adjoint au Maire | March 27, 2026 |
| Sara Abourizq | Conseiller municipal | March 22, 2026 |
| Isabelle Baron | Conseiller municipal | March 27, 2026 |
| Patrick Barzic | Conseiller municipal | March 22, 2026 |
| Stéphanie Beaumel | Conseiller municipal | March 22, 2026 |
| Anne-Christine Blot | Conseiller municipal | March 22, 2026 |
| Morgane Caradec-Perera | Conseiller municipal | March 22, 2026 |
| Laurent Caro | Conseiller municipal | March 22, 2026 |
| Dominique Charrier | Conseiller municipal | March 22, 2026 |
| Rokaya Chouchouh | Conseiller municipal | March 22, 2026 |
| Sirajou Djankado | Conseiller municipal | March 22, 2026 |
| Régis Etienne | Conseiller municipal | March 22, 2026 |
| Martine Eveque-Genin | Conseiller municipal | March 22, 2026 |
| Olivier Finel | Conseiller municipal | March 22, 2026 |
| Benjamin Guergnon | Conseiller municipal | March 22, 2026 |
| Gabriel Laumosne | Conseiller municipal | March 22, 2026 |
| Clémence Lelli | Conseiller municipal | March 22, 2026 |
| Noëlle Mauvezin | Conseiller municipal | March 22, 2026 |
| Nasym Mnafek | Conseiller municipal | March 22, 2026 |
| Claire Pinto-Carre | Conseiller municipal | March 22, 2026 |
| Olivier Tache | Conseiller municipal | March 22, 2026 |
| Clémence Taisne | Conseiller municipal | March 22, 2026 |
| Raphaël Thourel | Conseiller municipal | March 22, 2026 |
| Loïc Walder | Conseiller municipal | March 22, 2026 |
| Sourya Zinnoury | 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 Palaiseau, above.
How Palaiseau voted in March 2026
7 lists stood in the first round; none won half the votes, so a second round followed.
12,373 votes cast for a list
12,747 of 22,365 registered voters in Palaiseau voted.
247 blank and 127 spoilt ballots, not counted in the shares.
12,721 votes cast for a list · no seats given out: a second round followed
12,900 of 22,360 registered voters in Palaiseau voted.
104 blank and 75 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.
Palaiseau spends €1,648 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
Palaiseau owed €27M at the end of 2025, €743 per resident, lower than in 50% of compared French communes, equal to 59% of a year’s running costs.
Show year by year
| Year | Spending | Investment | Debt | Debt in all |
|---|---|---|---|---|
| 2025 | €1,648 | €381 | €743 | €27M |
| 2024 | €1,572 | €269 | €778 | €27.4M |
| 2023 | €1,460 | €202 | €784 | €27.5M |
| 2022 | €1,410 | €179 | €881 | €31.3M |
| 2021 | €1,350 | €203 | €908 | €32.6M |
| 2020 | €1,373 | €229 | €949 | €34M |
| 2019 | €1,536 | €336 | €979 | €34.2M |
| 2018 | €1,431 | €237 | €957 | €32.5M |
Source: OFGL, consolidated commune accounts 2018–2025 (DGFiP); 2025 provisional.
The 13th 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 Palaiseau
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 Palaiseau 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 Palaiseau’s town hall
Who is the mayor of Palaiseau?
Grégoire de Lasteyrie, mayor since March 27, 2026, according to the Interior ministry’s register of elected officials (August 11, 2026).
How many councilors does Palaiseau have?
The Palaiseau municipal council has 39 members, the mayor and 14 deputy mayors included.
Who won the 2026 municipal elections in Palaiseau?
100% Palaiseau avec Grégoire de Lasteyrie, in the second round on March 22, 2026, with 54.9% of the votes; it holds 30 of the 39 seats.
What was the turnout in Palaiseau?
57.7% 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 Palaiseau?
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 Palaiseau have?
€27M at the end of 2025, €743 per resident; the median of compared French communes was €748.
Which intercommunality is Palaiseau part of?
Palaiseau is part of the Communauté d'agglomération Communauté Paris-Saclay, 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.