Photo: Chatsam · CC BY-SA 3.0Saint-Martin-du-Tertre invested more per resident in 2025 than 86% of compared communes
Nathalie Benyahia has been mayor of Saint-Martin-du-Tertre since March 29, 2026, elected by the 23 members of the municipal council. At the March 2026 municipal elections, L'AVENIR C'EST ENSEMBLE won 18 of the 23 seats in the second round on March 22, 2026, with 51.4% of the votes. Saint-Martin-du-Tertre is part of the Communauté de communes Carnelle Pays-de-France.
March 2032
Councils are elected for six years; the council elects the mayor.
Register to vote ↗Throughout this page, the median in Val-d'Oise and the France median are the median of compared communes (those with an overall grade), each figure its own median.
What stands out about Saint-Martin-du-Tertre’s town hall
Decided in a second round
No list won half the votes in the first round, when 3 lists stood. In the second round on March 22, 2026, L'AVENIR C'EST ENSEMBLE came first with 51.4% and took 18 of the 23 seats; the other lists share the remaining 5. Who’s in charge ↓
A big year for investment
Saint-Martin-du-Tertre invested €760 per resident (buildings, roads, equipment), 44% of its spending: higher than in 86% 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.
- L'AVENIR C'EST ENSEMBLE182 community seats
- PERSPECTIVES POUR SAINT-MARTIN51 community seat
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 Saint-Martin-du-Tertre 3 seats on the council of the Communauté de communes Carnelle Pays-de-France (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: Nathalie Benyahia · 23 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 29, 2026Nathalie Benyahia
- 2Deputy mayors6 adjoints, elected by the councilPier Carlo BusinelliNajat BensaidYves GaxieuKarine DissaSébastien PelleKarine Saintipoly
- 3Saint-Martin-du-Tertre municipal council23 seats by listL'AVENIR C'EST ENSEMBLE 18 · PERSPECTIVES POUR SAINT-MARTIN 5
- 4Communauté de communes Carnelle Pays-de-FranceSaint-Martin-du-Tertre holds 3 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 23 members of the Saint-Martin-du-Tertre municipal council
The mayor and 6 deputy mayors first, then the councilors.
| Name | Office | Since |
|---|---|---|
| Nathalie Benyahia | Maire | March 29, 2026 |
| Pier Carlo Businelli | 1er adjoint au Maire | March 29, 2026 |
| Najat Bensaid | 2ème adjoint au Maire | March 29, 2026 |
| Yves Gaxieu | 3ème adjoint au Maire | March 29, 2026 |
| Karine Dissa | 4ème adjoint au Maire | March 29, 2026 |
| Sébastien Pelle | 5ème adjoint au Maire | March 29, 2026 |
| Karine Saintipoly | 6ème adjoint au Maire | March 29, 2026 |
Show the full council (23)
| Name | Office | Since |
|---|---|---|
| Nathalie Benyahia | Maire | March 29, 2026 |
| Pier Carlo Businelli | 1er adjoint au Maire | March 29, 2026 |
| Najat Bensaid | 2ème adjoint au Maire | March 29, 2026 |
| Yves Gaxieu | 3ème adjoint au Maire | March 29, 2026 |
| Karine Dissa | 4ème adjoint au Maire | March 29, 2026 |
| Sébastien Pelle | 5ème adjoint au Maire | March 29, 2026 |
| Karine Saintipoly | 6ème adjoint au Maire | March 29, 2026 |
| Sylvain Brindejonc | Conseiller municipal | March 22, 2026 |
| Christine Coorevits | Conseiller municipal | March 22, 2026 |
| Jacques Feron | Conseiller municipal | March 22, 2026 |
| Laura Fontaine-Berger | Conseiller municipal | March 22, 2026 |
| Christophe Lafouge | Conseiller municipal | March 22, 2026 |
| Aude Le Corfec | Conseiller municipal | March 22, 2026 |
| Sladjana Martineau | Conseiller municipal | March 22, 2026 |
| Francette Medina | Conseiller municipal | March 22, 2026 |
| Sébastien Morais | Conseiller municipal | March 22, 2026 |
| Sandrine Murphy | Conseiller municipal | March 22, 2026 |
| Robert Noetzel | Conseiller municipal | March 22, 2026 |
| Cyril Pialat | Conseiller municipal | March 22, 2026 |
| Bernadette Pilloux | Conseiller municipal | March 22, 2026 |
| Yannick Périer | Conseiller municipal | March 22, 2026 |
| Eric Rey | Conseiller municipal | March 22, 2026 |
| Jean-Paul Taniere | 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 Saint-Martin-du-Tertre, above.
How Saint-Martin-du-Tertre voted in March 2026
3 lists stood in the first round; none won half the votes, so a second round followed.
1,006 votes cast for a list
1,029 of 1,889 registered voters in Saint-Martin-du-Tertre voted.
13 blank and 10 spoilt ballots, not counted in the shares.
1,020 votes cast for a list · no seats given out: a second round followed
1,038 of 1,887 registered voters in Saint-Martin-du-Tertre voted.
12 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.
Saint-Martin-du-Tertre spends €1,741 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
Saint-Martin-du-Tertre owed €2.5M at the end of 2025, €916 per resident, higher than in 63% of compared French communes, equal to 93% of a year’s running costs.
Show year by year
| Year | Spending | Investment | Debt | Debt in all |
|---|---|---|---|---|
| 2025 | €1,741 | €760 | €916 | €2.5M |
| 2024 | €1,570 | €575 | €705 | €1.9M |
| 2023 | €1,098 | €224 | €771 | €2.1M |
| 2022 | €945 | €76 | €813 | €2.2M |
| 2021 | €938 | €141 | €512 | €1.4M |
| 2020 | €863 | €114 | €540 | €1.5M |
| 2019 | €1,049 | €274 | €586 | €1.6M |
| 2018 | €1,347 | €566 | €652 | €1.8M |
Source: OFGL, consolidated commune accounts 2018–2025 (DGFiP); 2025 provisional.
The 18th 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: Marpent, €98. Highest: Morzine, €6,565.
Have a say in Saint-Martin-du-Tertre
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 Saint-Martin-du-Tertre 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 Saint-Martin-du-Tertre’s town hall
Who is the mayor of Saint-Martin-du-Tertre?
Nathalie Benyahia, mayor since March 29, 2026, according to the Interior ministry’s register of elected officials (August 11, 2026).
How many councilors does Saint-Martin-du-Tertre have?
The Saint-Martin-du-Tertre municipal council has 23 members, the mayor and 6 deputy mayors included.
Who won the 2026 municipal elections in Saint-Martin-du-Tertre?
L'AVENIR C'EST ENSEMBLE, in the second round on March 22, 2026, with 51.4% of the votes; it holds 18 of the 23 seats.
What was the turnout in Saint-Martin-du-Tertre?
55% 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 Saint-Martin-du-Tertre?
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 Saint-Martin-du-Tertre have?
€2.5M at the end of 2025, €916 per resident; the median of compared French communes was €748.
Which intercommunality is Saint-Martin-du-Tertre part of?
Saint-Martin-du-Tertre is part of the Communauté de communes Carnelle Pays-de-France, 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.