France and Diaspora Reconnection

The short version

Find the commune first. Everything else in French genealogy follows from it, and without it the archives cannot help you, because French records are organized by place rather than by surname.

France has emigrated in many directions over three centuries: Huguenots to the Netherlands, England, Prussia and the Cape after 1685; Acadians and Canadiens to what became Quebec, the Maritimes and Louisiana; Alsatians and Lorrainers to the United States and Algeria after 1871; Bretons and Auvergnats to Paris and then abroad; and a great many people to the colonies and back again. A French roots trip means a different set of records depending on which of those you are following.

Why the commune is the unit

French civil registration began in 1792 and has been continuous since, recorded by the mairie of the commune where the event happened. Before that, the parish registers kept by the church do the same job, and many run back to the sixteenth century. Both are indexed by place and by year, not by name.

So a family story that says France, or even that says Normandy, is not yet an address. A single commune name is worth more than a province, a family legend and a spelling of the surname put together.

Where the records actually are

The archives departementales are the answer for almost everything a visitor wants. Each of the departments holds, for its own territory:

• civil registers of births, marriages and deaths from 1792, in ten-year indexes that make a surname search possible once you have the commune;
• parish registers before 1792;
• the cadastre, the land survey, which maps who held which parcel and is the closest thing to a photograph of a family's actual ground;
• military conscription lists, which from the Revolution onward describe nearly every young man in the department, including his height, his trade and often where he went;
• notarial records, which in France are exceptionally rich: marriage contracts, inventories after a death, land sales and wills, all held by a profession that kept everything.

Two things sit elsewhere. The Archives nationales hold the records of the state rather than of families. And where a family passed through the colonies, the relevant series are held at the overseas archives in Aix-en-Provence rather than in the department of origin.

A great deal of this is already online

This is the part that changes the shape of a trip. Most departments have digitized their civil and parish registers and put them on their own websites, free, page by page as scanned images. They are not transcribed and not name-searchable: you read the register the way a clerk wrote it.

The practical consequence is that the research can be done at home and the trip can be for the things the internet cannot give you: the notarial series, the cadastral maps, the commune itself, the churchyard, and the building. That is a much better trip than one spent reading scans in a reading room you flew to.

Visiting a reading room

Departmental archives are free to consult and open to anyone. Expect to register on arrival with identification, to be given a reader's card, and to leave bags in a locker. Pencil only: pens are not allowed near the documents. Photography of documents is usually permitted without flash, and the rules are posted at the desk.

Order documents in advance where the site allows it, because retrieval from a store can take hours and some series are fetched only at set times. Check opening days before you build a day around one: many archives close on Mondays, some close for a fortnight in summer, and August is the worst month to arrive unannounced in France for any purpose.

Staff are archivists rather than genealogists. They will find you the right series and they will not research your family for you, which is reasonable and worth knowing before you walk in.

The commune itself

Once you have the place, the visit is the point. The mairie holds recent civil records and can sometimes produce a certificate. The churchyard and the war memorial, which almost every French commune has, carry surnames that are still local. And the cadastral map you copied at the archives turns into a field you can stand in.

Write ahead rather than arriving unannounced at a small mairie, which may be staffed a few hours a week. A letter in French, even an imperfect one, gets further than an email in English.

What this guide does not say

It states no rule about citizenship or nationality. French nationality law is complex, it has changed materially, and a page like this is exactly the wrong place to read it. If descent matters to you legally rather than personally, ask a French consulate or a qualified practitioner.

Read this with our culture and etiquette guide for how to approach a small commune, and our transportation guide, because the places this research leads are regional-train country.

Sources

• UNESCO World Heritage Centre: France’s State Party record: fifty-six properties inscribed on the World Heritage List. Accessed 16 September 2026.