Photo: Artvill · CC BY-SA 4.0Montlhéry invested more per resident in 2025 than 91% of compared communes
Jérôme Bertin has been mayor of Montlhéry since March 20, 2026, elected by the 29 members of the municipal council. At the March 2026 municipal elections, Cap Montlhéry notre ville won 23 of the 29 seats in the first round on March 15, 2026, with 57.5% of the votes. Montlhéry 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.
What stands out about Montlhéry’s town hall
Won in the first round
Cap Montlhéry notre ville won 57.5% of the votes on March 15, 2026, more than half, so there was no second round; 2 lists stood. It took 23 of the 29 seats: half the seats as the list ahead, and its share of the rest. The other lists share the remaining 6. Who’s in charge ↓
More debt per resident than most
Montlhéry owed €9.4M at the end of 2025, €991 per resident: higher than in 68% of compared French communes (France median €748). That equals 92% of a year’s running costs. The commune’s money ↓
A big year for investment
Montlhéry invested €892 per resident (buildings, roads, equipment), 45% of its spending: higher than in 91% 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.
- Cap Montlhéry notre ville232 community seats
- Unis pour Montlhéry avec la majorité municipale60 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 Montlhéry 2 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: Jérôme Bertin · 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 20, 2026Jérôme Bertin
- 2Deputy mayors6 adjoints, elected by the councilRomuald RichardChristina NoelKarim KarouiCéline KiefferChristophe GodonEmilie Zanato
- 3Montlhéry municipal council29 seats by listCap Montlhéry notre ville 23 · Unis pour Montlhéry avec la majorité municipale 6
- 4Communauté d'agglomération Communauté Paris-SaclayMontlhéry 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 Montlhéry municipal council
The mayor and 6 deputy mayors first, then the councilors.
| Name | Office | Since |
|---|---|---|
| Jérôme Bertin | Maire | March 20, 2026 |
| Romuald Richard | 1er adjoint au Maire | March 20, 2026 |
| Christina Noel | 2ème adjoint au Maire | March 20, 2026 |
| Karim Karoui | 3ème adjoint au Maire | March 20, 2026 |
| Céline Kieffer | 4ème adjoint au Maire | March 20, 2026 |
| Christophe Godon | 5ème adjoint au Maire | March 20, 2026 |
| Emilie Zanato | 6ème adjoint au Maire | March 20, 2026 |
Show the full council (29)
| Name | Office | Since |
|---|---|---|
| Jérôme Bertin | Maire | March 20, 2026 |
| Romuald Richard | 1er adjoint au Maire | March 20, 2026 |
| Christina Noel | 2ème adjoint au Maire | March 20, 2026 |
| Karim Karoui | 3ème adjoint au Maire | March 20, 2026 |
| Céline Kieffer | 4ème adjoint au Maire | March 20, 2026 |
| Christophe Godon | 5ème adjoint au Maire | March 20, 2026 |
| Emilie Zanato | 6ème adjoint au Maire | March 20, 2026 |
| Bachir Benhamida | Conseiller municipal | March 15, 2026 |
| Jessica Chuinard | Conseiller municipal | March 15, 2026 |
| Alexandra Da Silva Rebelo | Conseiller municipal | June 25, 2026 |
| Yannick Delmon | Conseiller municipal | March 15, 2026 |
| Geneviève Eyrolle Roca | Conseiller municipal | March 15, 2026 |
| Isabelle Kljajic Martins | Conseiller municipal | March 15, 2026 |
| Christelle Le Denn | Conseiller municipal | March 15, 2026 |
| Didier Margraitte | Conseiller municipal | March 15, 2026 |
| Luc Mora | Conseiller municipal | March 15, 2026 |
| Florian Morineau | Conseiller municipal | March 15, 2026 |
| Anne-Emmanuelle Nettersheim | Conseiller municipal | March 15, 2026 |
| Rene Louis Nuel | Conseiller municipal | June 25, 2026 |
| Ingrid Renoux | Conseiller municipal | March 15, 2026 |
| Frederic Rigoulay | Conseiller municipal | March 15, 2026 |
| Laurence Riva | Conseiller municipal | March 15, 2026 |
| Reine Robinet | Conseiller municipal | March 15, 2026 |
| Cyrielle Selvez | Conseiller municipal | March 15, 2026 |
| Hugo Souesme | Conseiller municipal | March 15, 2026 |
| Melissandre Suzanne | Conseiller municipal | March 15, 2026 |
| Eric Vergne | Conseiller municipal | March 15, 2026 |
| Denis Villermet | Conseiller municipal | March 15, 2026 |
| Odile Wandji | 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 Montlhéry, above.
How Montlhéry voted in March 2026
2 lists stood; one won more than half the votes in the first round.
3,047 votes cast for a list
3,128 of 5,506 registered voters in Montlhéry voted.
60 blank and 21 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.
Montlhéry spends €1,973 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
Montlhéry owed €9.4M at the end of 2025, €991 per resident, higher than in 68% of compared French communes, equal to 92% of a year’s running costs.
Show year by year
| Year | Spending | Investment | Debt | Debt in all |
|---|---|---|---|---|
| 2025 | €1,973 | €892 | €991 | €9.4M |
| 2024 | €1,523 | €425 | €1,161 | €10.3M |
| 2023 | €1,782 | €745 | €996 | €8.8M |
| 2022 | €1,482 | €394 | €959 | €7.6M |
| 2021 | €1,555 | €531 | €1,067 | €8.4M |
| 2020 | €1,653 | €656 | €1,038 | €8.1M |
| 2019 | €1,251 | €279 | €1,091 | €8.5M |
| 2018 | €1,178 | €237 | €1,196 | €9.3M |
Source: OFGL, consolidated commune accounts 2018–2025 (DGFiP); 2025 provisional.
The 12th 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: Bondues, €1. Highest: Beauchamp, €2,285.
Have a say in Montlhéry
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 Montlhéry 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 Montlhéry’s town hall
Who is the mayor of Montlhéry?
Jérôme Bertin, mayor since March 20, 2026, according to the Interior ministry’s register of elected officials (August 11, 2026).
How many councilors does Montlhéry have?
The Montlhéry municipal council has 29 members, the mayor and 6 deputy mayors included.
Who won the 2026 municipal elections in Montlhéry?
Cap Montlhéry notre ville, in the first round on March 15, 2026, with 57.5% of the votes; it holds 23 of the 29 seats.
What was the turnout in Montlhéry?
56.8% 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 Montlhéry?
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 Montlhéry have?
€9.4M at the end of 2025, €991 per resident; the median of compared French communes was €748.
Which intercommunality is Montlhéry part of?
Montlhéry 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.