Declaring a Birth in Monaco: Deadline, Documents and the Mairie
How to declare a newborn in Monaco: the five-day legal deadline, who must declare, documents to bring to the Service de l'État Civil, and the surname choice you must make on the day.

Key facts
- Legal deadline
- 5 days after delivery (day of birth not counted) — Art. 44, Monegasque Civil Code
- Where
- Service de l'État Civil, Mairie de Monaco, Place de la Mairie, Monaco-Ville
- Opening hours
- Monday–Friday 08:30–16:00, no lunch closure
- Cost of the declaration
- Free
- Surname choice
- Must be declared jointly in writing by the day of the birth declaration at the latest
The five-day rule
Every birth that takes place in Monaco must be declared to the Service de l'État Civil at the Mairie de Monaco. Article 44 of the Monegasque Civil Code sets the deadline at five days following the delivery. The day of the birth itself is not counted, and where the last day falls on a Saturday or a public holiday the deadline is extended to the next working day.
Note the figure carefully: a three-day deadline is often quoted for Monaco, borrowed from French practice before 2017. It is not the Monegasque rule. Monaco has its own Civil Code, and five days is the applicable period.
Missing the deadline is expensive in time rather than money. Under Article 48, once the period has run the registrar can no longer enter the birth on the strength of a declaration at the counter: the entry can only be made by transcribing a court judgment (jugement déclaratif de naissance) from the Tribunal de Première Instance, containing all the particulars Article 46 requires. Treat the five days as firm.
Who has to declare
Article 45 sets an order of responsibility:
- The father of the child
- Failing him, the people who attended the birth — the doctor or the midwife
- Failing them, the person at whose home the mother gave birth
Almost all births in the Principality happen at the Centre Hospitalier Princesse Grace, where the maternity ward walks parents through the formality and coordinates with the registry. That help does not transfer the legal obligation: it remains with the family, and it is worth confirming with the Mairie that the entry has actually been made before you stop thinking about it.
Where to go
Mairie de Monaco — Service de l'État Civil Place de la Mairie, 98000 Monaco-Ville (Le Rocher) Telephone: +377 93 15 28 51 or +377 93 15 29 64 Email: etatcivil@mairie.mc
Opening hours: Monday to Friday, 08:30 to 16:00, without a lunchtime closure. The office also opens on Saturday mornings from 09:00 to 12:00, but that slot is reserved for marriages.
The office sits at the top of the Rock, next to the Palais. Parking on Monaco-Ville is restricted to residents and permit-holders; the practical approach is the Parking des Pêcheurs and the lifts, or bus line 1 or 2 to Monaco-Ville.
Giving birth at the CHPG
The Centre Hospitalier Princesse Grace maternity unit is a level IIA facility delivering more than a thousand babies a year. Deliveries are handled from 32 weeks of amenorrhoea, with an obstetrician-gynaecologist, an anaesthetist and a paediatrician on duty around the clock.
The unit gives an expected stay of about three days after a vaginal delivery and five days after a caesarean — which comfortably covers the five-day declaration window, so in most cases one parent makes the trip to the Mairie while mother and baby are still in hospital.
For the wider picture of how the hospital works — admissions, insurance, CCSS cover — see the CHPG hospital guide.
What to bring
In every case:
- The medical birth certificate (certificat d'accouchement) issued by the maternity unit
- The declarant's identity document — passport or national identity card, valid
If the parents are married:
- The livret de famille, or failing that the marriage certificate
If the parents are not married:
- Identity documents for both parents
- Documentation of any acknowledgement of paternity already made before the birth
If either parent is a foreign national:
- Foreign civil status documents must be originals or certified copies
- Documents not drawn up in French must come with a certified French translation
Decide the surname before you go
This is the single most common thing parents get wrong, because Monegasque law is not French law here.
Under Article 77 of the Civil Code, as reformed by Law 1.440 of 5 December 2016, a child born to married parents takes the father's surname by default. The parents may instead give the child the mother's surname — but only by a joint written declaration, made to the registrar by the day of the birth declaration at the latest. Article 77-2 applies the same rule to children born outside marriage where both parents' filiation is established at the time of the declaration.
Two consequences worth knowing:
- There is no double-barrelled option. Unlike French law since 2005, Monegasque law does not let a child carry both parents' surnames joined together. The choice is one name or the other.
- The choice binds the siblings. Once a surname has been chosen for one child of the couple, the same name applies automatically to every subsequent child they have together.
The Déclaration de choix de nom form can be downloaded in advance from the Mairie's website. If you want it, fill it in before the hospital discharge rather than deciding at the counter.
Recognition before the birth
Law 1.440 also introduced antenatal recognition (reconnaissance anténatale) into Monegasque law. Under Article 234, a parent may recognise a child before it is born, either by declaration to the registrar or by any authentic act. Article 235 gives that recognition the same effect as a recognition made after the birth, once the birth has been declared and the mother identified.
For unmarried couples this is the cleanest route: it settles filiation in advance and removes a step from an already busy week.
What it costs and what you leave with
The declaration itself is free. Monaco's civil status records have been computerised since 2005, and certificates are printed and handed over at the counter on the spot rather than posted weeks later.
Ask for several copies while you are there — passport applications, crèche or school enrolment, insurers and the CCSS will each want one. Further copies can be ordered later, in person or online, for a small fee.
Practical checklist
- Download and complete the surname declaration form before you go, if you intend to choose the mother's name
- Ask the maternity ward whether the medical certificate has already been transmitted, or whether you carry it yourself
- Bring the livret de famille — it is the document most often forgotten
- Go with a valid ID, not an expired one; the registrar will not work around it
- Request at least three certified copies at the counter
- If either parent is a foreign national, plan the translation before the birth, not after
After the declaration
Getting the birth into the register is only the first half. What the certificate contains, which type of extract to request for which purpose, how to have it apostilled for use abroad, and how to register the birth with your own country are covered in the companion guide: Birth certificates and civil status records in Monaco.
See also: Getting married in Monaco · Childcare in Monaco
Frequently asked questions
The information provided is for general guidance only. For official procedures, always consult the official sources.
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