Photo: Henry Salomé · CC BY-SA 3.0In Mareil-Marly, turnout beat 84% of compared French communes
Dominique Lafon has been mayor of Mareil-Marly since March 24, 2026, elected by the 27 members of the municipal council. At the March 2026 municipal elections, ADN MAREIL 2026 won 22 of the 27 seats in the first round on March 15, 2026, with 63.2% of the votes. Mareil-Marly 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 Mareil-Marly’s town hall
Won in the first round
ADN MAREIL 2026 won 63.2% of the votes on March 15, 2026, more than half, so there was no second round; 2 lists stood. It took 22 of the 27 seats: half the seats as the list ahead, and its share of the rest. The other lists share the remaining 5. Who’s in charge ↓
Turnout above most communes
64.9% of registered voters in Mareil-Marly voted on March 15, 2026: higher than in 84% 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
Mareil-Marly owed €4.7M at the end of 2025, €1,141 per resident: higher than in 76% of compared French communes (France median €748). That equals 140% 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.
- ADN MAREIL 2026221 community seat
- VIVONS MAREIL-MARLY 202650 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 Mareil-Marly 1 seat 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: Dominique Lafon · 27 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 24, 2026Dominique Lafon
- 2Deputy mayors8 adjoints, elected by the councilSophie GarciaJean-Pierre ThomasMuriel de RotalierThierry BoudinIsabelle Le BoudecAlain LambertMichèle DudouetPhilippe Lavoine
- 3Mareil-Marly municipal council27 seats by listADN MAREIL 2026 22 · VIVONS MAREIL-MARLY 2026 5
- 4Communauté d'agglomération Saint Germain Boucles de SeineMareil-Marly holds 1 seatCommunity councilors are drawn from the council lists in the same vote.
Source: Interior ministry, national register of elected officials (RNE), August 11, 2026.
The 27 members of the Mareil-Marly municipal council
The mayor and 8 deputy mayors first, then the councilors.
| Name | Office | Since |
|---|---|---|
| Dominique Lafon | Maire | March 24, 2026 |
| Sophie Garcia | 1er adjoint au Maire | March 24, 2026 |
| Jean-Pierre Thomas | 2ème adjoint au Maire | March 24, 2026 |
| Muriel de Rotalier | 3ème adjoint au Maire | March 24, 2026 |
| Thierry Boudin | 4ème adjoint au Maire | March 24, 2026 |
| Isabelle Le Boudec | 5ème adjoint au Maire | March 24, 2026 |
| Alain Lambert | 6ème adjoint au Maire | March 24, 2026 |
| Michèle Dudouet | 7ème adjoint au Maire | March 24, 2026 |
| Philippe Lavoine | 8ème adjoint au Maire | March 24, 2026 |
Show the full council (27)
| Name | Office | Since |
|---|---|---|
| Dominique Lafon | Maire | March 24, 2026 |
| Sophie Garcia | 1er adjoint au Maire | March 24, 2026 |
| Jean-Pierre Thomas | 2ème adjoint au Maire | March 24, 2026 |
| Muriel de Rotalier | 3ème adjoint au Maire | March 24, 2026 |
| Thierry Boudin | 4ème adjoint au Maire | March 24, 2026 |
| Isabelle Le Boudec | 5ème adjoint au Maire | March 24, 2026 |
| Alain Lambert | 6ème adjoint au Maire | March 24, 2026 |
| Michèle Dudouet | 7ème adjoint au Maire | March 24, 2026 |
| Philippe Lavoine | 8ème adjoint au Maire | March 24, 2026 |
| Raymond Ban | Conseiller municipal | March 15, 2026 |
| Guillaume Bessette | Conseiller municipal | March 15, 2026 |
| Marc Bouvelle | Conseiller municipal | March 15, 2026 |
| Ludovic Brion | Conseiller municipal | March 15, 2026 |
| Claire de La Rupelle | Conseiller municipal | March 15, 2026 |
| Béatrice Dubreuil-Basire | Conseiller municipal | March 15, 2026 |
| Nathalie El Khiati | Conseiller municipal | March 15, 2026 |
| Loïc Etienne | Conseiller municipal | March 15, 2026 |
| Anne-Sophie Faroux | Conseiller municipal | March 15, 2026 |
| Dominique Lefebvre | Conseiller municipal | March 15, 2026 |
| Cécile Mansuy | Conseiller municipal | March 15, 2026 |
| Benoit Martin | Conseiller municipal | March 15, 2026 |
| Jérémie Mathe | Conseiller municipal | March 15, 2026 |
| Alexandre Orvain | Conseiller municipal | March 15, 2026 |
| Guillaume Quef | Conseiller municipal | March 15, 2026 |
| Caroline Treyve | Conseiller municipal | March 15, 2026 |
| Rokhaya Wade-Ruet | Conseiller municipal | March 15, 2026 |
| Maria Wentholt | 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 Mareil-Marly, above.
How Mareil-Marly voted in March 2026
2 lists stood; one won more than half the votes in the first round.
1,890 votes cast for a list
1,922 of 2,963 registered voters in Mareil-Marly voted.
26 blank and 6 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.
Mareil-Marly spends €1,350 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
Mareil-Marly owed €4.7M at the end of 2025, €1,141 per resident, higher than in 76% of compared French communes, equal to 140% of a year’s running costs.
Show year by year
| Year | Spending | Investment | Debt | Debt in all |
|---|---|---|---|---|
| 2025 | €1,350 | €533 | €1,141 | €4.7M |
| 2024 | €2,222 | €1,420 | €1,277 | €5M |
| 2023 | €2,174 | €1,329 | €753 | €2.9M |
| 2022 | €1,314 | €531 | €416 | €1.6M |
| 2021 | €1,197 | €453 | €214 | €773K |
| 2020 | €1,024 | €256 | €252 | €908K |
| 2019 | €866 | €129 | €296 | €1.1M |
| 2018 | €1,198 | €477 | €321 | €1.2M |
Source: OFGL, consolidated commune accounts 2018–2025 (DGFiP); 2025 provisional.
The 5th 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: Ghyvelde, €124. Highest: Fouras, €2,118.
Have a say in Mareil-Marly
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 Mareil-Marly 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 Mareil-Marly’s town hall
Who is the mayor of Mareil-Marly?
Dominique Lafon, mayor since March 24, 2026, according to the Interior ministry’s register of elected officials (August 11, 2026).
How many councilors does Mareil-Marly have?
The Mareil-Marly municipal council has 27 members, the mayor and 8 deputy mayors included.
Who won the 2026 municipal elections in Mareil-Marly?
ADN MAREIL 2026, in the first round on March 15, 2026, with 63.2% of the votes; it holds 22 of the 27 seats.
What was the turnout in Mareil-Marly?
64.9% 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 Mareil-Marly?
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 Mareil-Marly have?
€4.7M at the end of 2025, €1,141 per resident; the median of compared French communes was €748.
Which intercommunality is Mareil-Marly part of?
Mareil-Marly 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.