Arzon carries more debt per resident than 99% of compared communes
Olivier Denfer has been mayor of Arzon since March 27, 2026, elected by the 19 members of the municipal council. At the March 2026 municipal elections, Agir ensemble pour Arzon won 15 of the 19 seats in the second round on March 22, 2026, with 53.6% of the votes. Arzon is part of the Communauté d'agglomération Golfe du Morbihan - Vannes Agglomération.
March 2032
Councils are elected for six years; the council elects the mayor.
Register to vote ↗Throughout this page, the median in Morbihan and the France median are the median of compared communes (those with an overall grade), each figure its own median. Arzon has 2,271 residents; every compared commune has 2,507 or more, so read its place among them with that in mind.
What stands out about Arzon’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, Agir ensemble pour Arzon came first with 53.6% and took 15 of the 19 seats; the other lists share the remaining 4. Who’s in charge ↓
Turnout above most communes
73.8% of registered voters in Arzon voted on March 15, 2026: higher than in 99% of compared French communes. The median of compared communes in Morbihan was 62.8%; across France, 57.4%. 2026 elections ↓
More debt per resident than most
Arzon owed €9.7M at the end of 2025, €4,186 per resident: higher than in 99% of compared French communes (France median €748). That equals 114% of a year’s running costs. The commune’s money ↓
A big year for investment
Arzon invested €1,989 per resident (buildings, roads, equipment), 35% of its spending: higher than in 99% 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.
- Agir ensemble pour Arzon151 community seat
- Engagés pour Arzon30 community seats
- Arzon vivant10 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 Arzon 1 seat on the council of the Communauté d'agglomération Golfe du Morbihan - Vannes Agglomération (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: Olivier Denfer · 19 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, 2026Olivier Denfer
- 2Deputy mayors5 adjoints, elected by the councilIsabelle RondotRonan DuboisCaridad PellissierYves RivainFlorence Cotte
- 3Arzon municipal council19 seats by listAgir ensemble pour Arzon 15 · Engagés pour Arzon 3 · Arzon vivant 1
- 4Communauté d'agglomération Golfe du Morbihan - Vannes AgglomérationArzon 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 19 members of the Arzon municipal council
The mayor and 5 deputy mayors first, then the councilors.
| Name | Office | Since |
|---|---|---|
| Olivier Denfer | Maire | March 27, 2026 |
| Isabelle Rondot | 1er adjoint au Maire | March 27, 2026 |
| Ronan Dubois | 2ème adjoint au Maire | March 27, 2026 |
| Caridad Pellissier | 3ème adjoint au Maire | March 27, 2026 |
| Yves Rivain | 4ème adjoint au Maire | March 27, 2026 |
| Florence Cotte | 5ème adjoint au Maire | March 27, 2026 |
Show the full council (19)
| Name | Office | Since |
|---|---|---|
| Olivier Denfer | Maire | March 27, 2026 |
| Isabelle Rondot | 1er adjoint au Maire | March 27, 2026 |
| Ronan Dubois | 2ème adjoint au Maire | March 27, 2026 |
| Caridad Pellissier | 3ème adjoint au Maire | March 27, 2026 |
| Yves Rivain | 4ème adjoint au Maire | March 27, 2026 |
| Florence Cotte | 5ème adjoint au Maire | March 27, 2026 |
| Sophie Bourcier | Conseiller municipal | March 22, 2026 |
| Sylvie Cottet | Conseiller municipal | March 22, 2026 |
| Bruno de Reneville | Conseiller municipal | March 22, 2026 |
| Patrick Deplaix | Conseiller municipal | March 22, 2026 |
| Jean-Michel Desmars | Conseiller municipal | March 22, 2026 |
| Aorelian Garcia | Conseiller municipal | March 22, 2026 |
| Audrey Le Panse | Conseiller municipal | March 22, 2026 |
| Jean-Jacques Mulot | Conseiller municipal | April 3, 2026 |
| Patrice Serignac | Conseiller municipal | March 22, 2026 |
| Bernard Souilliart | Conseiller municipal | March 22, 2026 |
| Natalie Stephany | Conseiller municipal | March 22, 2026 |
| Lydie Tamarelle | Conseiller municipal | March 22, 2026 |
| Corinne Vialatte | 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 Arzon, above.
How Arzon voted in March 2026
3 lists stood in the first round; none won half the votes, so a second round followed.
1,785 votes cast for a list
1,812 of 2,430 registered voters in Arzon voted.
14 blank and 13 spoilt ballots, not counted in the shares.
1,760 votes cast for a list · no seats given out: a second round followed
1,793 of 2,430 registered voters in Arzon voted.
22 blank and 11 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.
Arzon spends €5,657 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
Arzon owed €9.7M at the end of 2025, €4,186 per resident, higher than in 99% of compared French communes, equal to 114% of a year’s running costs.
Show year by year
| Year | Spending | Investment | Debt | Debt in all |
|---|---|---|---|---|
| 2025 | €5,657 | €1,989 | €4,186 | €9.7M |
| 2024 | €5,266 | €1,608 | €4,338 | €10M |
| 2023 | €5,191 | €1,908 | €4,303 | €9.9M |
| 2022 | €4,789 | €1,618 | €4,995 | €11.2M |
| 2021 | €5,192 | €2,170 | €4,623 | €10M |
| 2020 | €5,644 | €2,618 | €4,610 | €9.7M |
| 2019 | €4,856 | €1,948 | €3,859 | €8.2M |
| 2018 | €4,166 | €1,358 | €4,292 | €9.2M |
Source: OFGL, consolidated commune accounts 2018–2025 (DGFiP); 2025 provisional.
The 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: Watten, €1. Highest: Arzon, €4,186.
Have a say in Arzon
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 Arzon 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 Arzon’s town hall
Who is the mayor of Arzon?
Olivier Denfer, mayor since March 27, 2026, according to the Interior ministry’s register of elected officials (August 11, 2026).
How many councilors does Arzon have?
The Arzon municipal council has 19 members, the mayor and 5 deputy mayors included.
Who won the 2026 municipal elections in Arzon?
Agir ensemble pour Arzon, in the second round on March 22, 2026, with 53.6% of the votes; it holds 15 of the 19 seats.
What was the turnout in Arzon?
73.8% 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 Arzon?
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 Arzon have?
€9.7M at the end of 2025, €4,186 per resident; the median of compared French communes was €748.
Which intercommunality is Arzon part of?
Arzon is part of the Communauté d'agglomération Golfe du Morbihan - Vannes Agglomération, 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.