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Sadin

Sadin. Attested in France, United States of America, Belgium, borne by about 568 people in the registers this map holds.

The same name, spelt two ways

One systematic substitution — s for z, w for v, ch for h — where BOTH spellings are independently attested surnames. Kosina and Kozina are one man in two clerks' handwriting. Stronger than sounding alike, weaker than somebody having checked.

Sadyń

It is also the name of a place

1 place drawn, the largest being SadinSadin — 24
Where those places are. A dot is a settlement whose name is this surname, sized by its population — not a claim that anybody of the name lives there. Phonetic neighbours are listed below but not drawn: putting a machine's guess on the ground would dress it up as geography.

This is as close to an origin as this map will go. A surname that is also a place name often came from it — and often did not: plenty are occupations or patronymics that happen to collide with a place, and plenty of places are named after a family rather than the other way round. It is a fact with a source, which is more than an etymology page offers.

  • Sadin Austria pop. 24

Where it is borne, and where a record names it

Attested in 3 countries: France, United States of America, BelgiumBelgium — 80 peopleUnited States of America — 112 peopleFrance — 376 people
A dot is a country, not a place. It sits at the country's centre because a national register counts a country; nothing here says where in it these people are. Blank is not absence. This draws the 3 countries where the eleven registers and eight archives behind this atlas attest the name. Most of the world has no surname register this project can read, and the ones that do and will not are listed with the reason.
Belgium, by commune. 80 people in 8 of Belgium's 565 communes, counted by Statbel. The biggest is Doornik with 24. This is the only country here that can be drawn this way — every other register counts a country and stops, so a blank elsewhere is a gap in what states publish, not in the name.
8 places drawn, the largest being Doornik, Charleroi, Bergen, Rumes, Zinnik, Binche, Luik, RixensartRixensart — 6Luik — 7Binche — 7Zinnik — 7Rumes — 8Bergen — 10Charleroi — 11Doornik — 24

Country by country

Each country below can carry up to three different kinds of evidence, and none of them is the same claim. A register is a head-count — a state counted these people. A record is one document naming the surname on that ground, narrower evidence and often much older. And a volume overlapping these dates is a document from the right place and years — never a document known to name this surname. None of the three ever means the name exists in that country and nowhere else, or that it exists nowhere but here.

France

376 Borne — a state counted them — Fichier des noms de famille 1891–2000 (INSEE, fichier national).

Whose archive to write to
Attested here, and nothing that survives covers those years

Sadin is attested in France in the 1950s. Not one of the 1,513 volumes this atlas holds for France covers those years — worth knowing before an afternoon is spent on France's shelf rather than after.

United States of America

112 Borne — a state counted them — Frequently Occurring Surnames from the 2010 Census.

Whose archive to write to

This atlas has no birth-year evidence for Sadin in United States of America, so it cannot narrow United States of America's 528,875 volumes by date — see United States of America's own page for all of it.

Belgium

80 Borne — a state counted them — Family names by municipality, 1 January 2026 (Statbel, TA_POP_LST_2026).

Whose archive to write to

11 of 24,426 volumes held for Belgium overlap the 1980s — the decades Sadin is attested here. None is known to name Sadin: a volume overlapping these years is a document from the right place and time, not a confirmed match. Worth an afternoon.

When it was being born, in France

INSEE counts births by surname and decade from the état civil, 1891 to 2000 — the only dated evidence in this dataset. A name that starts at zero and climbs arrived; a name that falls to nothing left, died out, or emigrated, and the decade it stops is the decade to stop searching. It counts births registered in France, so a family that emigrated in 1900 simply stops appearing, which is information rather than a defect.

  • 1891–1900 14
  • 1901–1910 23
  • 1911–1920 21
  • 1921–1930 24
  • 1931–1940 23
  • 1941–1950 33
  • 1951–1960 41
  • 1961–1970 55
  • 1971–1980 39
  • 1981–1990 55
  • 1991–2000 48

Whose archive held that ground, and when

Every surname site can tell you a name is common somewhere. This one also knows which filing system held that ground in which years — and those are the two halves of one question: my people were called this, they were there, so who has the paper, and for which century. A name in Croatia before 1881 may sit in a military series and not a county one; a name in the Netherlands before 1811 has no civil record at all, only a baptism.

This is about the ground, not about your family. A register counting a name in a country says nothing about which village. And these are the pieces of a country this atlas has drawn, which in a large one may be a corner of it — Acadia reaches into Maine and is not a statement about the United States, and Bohemia's ground crosses into Poland. Each region's own page says which ground it covers. Where a country is missing below, nothing covers it yet.

France
United States of America
Belgium

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The surname dataset · CC0, and downloadable