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Zák

Zák. Attested in Poland, United States of America, France, Spain, Slovenia, Belgium, Denmark, borne by about 26,373 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.

ZächZack

What Wikidata says this name is

Copied from Wikidata, not worked out here. It is crowd-sourced and wrong in places, which is why the item is linked below rather than the claim simply repeated.

  • Polish · Czech · Yiddish the language of the name

    Which is not where a family is from. A Polish surname can be borne by people whose forebears never saw Poland, and often is.

  • Read about it on Wikipedia ↗ an article, with its own sources

Q16910918 on Wikidata ↗ — the item every line above came from.

What Wiktionary says this name is

Copied from the surname template on Wiktionary, not worked out here, and not from its etymology prose. Anyone may edit it; the page and the revision it was read at are linked below.

  • Polish · Czech · Slovak recorded as a surname in these languages

    A language here is the language of the NAME, not a country a family came from — the same caveat the Wikidata section carries, and worth repeating rather than assumed read.

Zák on Wiktionary ↗ — read at revision 84410557. Text from Wiktionary, by its contributors, under CC BY-SA 4.0.

It is also the name of a place

2 places drawn, the largest being Zach, ZackZack — 1Zach — 1
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.

  • Zach Germany a spelling of the name
  • Zack United States of America a spelling of the name

Where it is borne, and where a record names it

Attested in 7 countries: Poland, United States of America, France, Spain, Slovenia, Belgium, DenmarkDenmark — attested, not countedBelgium — 10 peopleSlovenia — 11 peopleSpain — 152 peopleFrance — 432 peopleUnited States of America — 5,177 peoplePoland — 20,591 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. A hollow ring is attested but not counted — Denmark publishes which surnames exist and not how many carry each, and a family archive finds a name without counting heads. Sizing those by a number nobody published would invent it. Blank is not absence. This draws the 7 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. 10 people in 2 of Belgium's 565 communes, counted by Statbel. The biggest is Antwerpen with 5. 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.
2 places drawn, the largest being Antwerpen, BoussuBoussu — 5Antwerpen — 5

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.

Poland

20,591 Borne — a state counted them — Nazwiska występujące w rejestrze PESEL (z uwzględnieniem osób zmarłych).

Whose archive to write to

7,714 of 15,686 volumes held for Poland overlap the 1860s, 1880s, 1890s, 1900s, 1910s, 1920s, 1930s, 1950s, 1960s, 1970s, 1980s and 1990s — the decades Zák is attested here. Too many to list, and this atlas does not know whether any one of them names Zák. The commonest kinds: Church and parish registers, Civil registration and vital records, Cemeteries and burials, Censuses and population lists. See everything this atlas holds for Poland →

United States of America

5,177 Borne — a state counted them — Frequently Occurring Surnames from the 2010 Census; Frequently Occurring Surnames from the 2000 Census.

Whose archive to write to

189,158 of 528,875 volumes held for United States of America overlap the 1910s, 1920s, 1930s, 1940s, 1950s, 1960s and 1990s — the decades Zák is attested here. Too many to list, and this atlas does not know whether any one of them names Zák. The commonest kinds: Probate, land and notarial, Civil registration and vital records, Immigration and emigration, Censuses and population lists. See everything this atlas holds for United States of America →

France

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

Whose archive to write to

This atlas has no birth-year evidence for Zák in France, so it cannot narrow France's 1,513 volumes by date — see France's own page for all of it.

Spain

152 Borne — a state counted them — Frecuencia de apellidos, Censos de población (INE).

Whose archive to write to

17 of 35,936 volumes held for Spain overlap the 1980s — the decades Zák is attested here. None is known to name Zák: a volume overlapping these years is a document from the right place and time, not a confirmed match. Worth an afternoon.

Slovenia

11 Borne — a state counted them — Family names, Slovenia, 2026 (SURS tables 05X1015S–05X1018S).

Whose archive to write to

This atlas has no birth-year evidence for Zák in Slovenia, so it cannot narrow Slovenia's 1,585 volumes by date — see Slovenia's own page for all of it.

Belgium

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

Whose archive to write to

This atlas has no birth-year evidence for Zák in Belgium, so it cannot narrow Belgium's 24,426 volumes by date — see Belgium's own page for all of it.

Denmark

Borne — a state counted them — Navne registreret i Danmark, January 2020 (Danmarks Statistik, republished by Digitaliseringsstyrelsen).

Whose archive to write to

This atlas has no birth-year evidence for Zák in Denmark, so it cannot narrow Denmark's 4,099 volumes by date — see Denmark's own page for all of it.

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. This name's first French births fall in 1901–1910 and its last in 1991–2000.

  • 1891–1900 —
  • 1901–1910 2
  • 1911–1920 1
  • 1921–1930 53
  • 1931–1940 64
  • 1941–1950 56
  • 1951–1960 48
  • 1961–1970 62
  • 1971–1980 56
  • 1981–1990 37
  • 1991–2000 53

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.

Poland
  • Pomerania and Danzig 7 eras Duchy of Pomerania → Swedish Pomerania in the west; Brandenburg-Prussia in the east → Prussia → German Empire → …
  • Bohemia 6 eras Kingdom of Bohemia → Austria → Czechoslovakia → Sudetenland and the Reichsprotektorat → …
  • Posen — Prussian Poland 8 eras Poland → Prussia → Duchy of Warsaw → German Empire → …
  • Galicia 6 eras Kingdom of Galicia–Volhynia → Poland → Austria → German and Soviet occupation → …
  • Moravia and Silesia 6 eras Margraviate of Moravia → Austria → Czechoslovakia → Reichsprotektorat Böhmen und Mähren → …
  • East Prussia 4 eras State of the Teutonic Order → Duchy, then Kingdom, of Prussia → German Empire → Russia in the north; Poland in the south; Lithuania at Memel
  • Silesia 6 eras Habsburg Bohemian crown lands → Prussia → German Empire → Divided → …
  • Congress Poland — the Russian partition 7 eras Russian Empire → Duchy of Warsaw → Kingdom of Poland, in personal union with Russia → Poland, restored → …
United States of America
France
Slovenia
  • Central Istria 8 eras Aquileia → Habsburg → Napoleonic → Austria–Hungary → …
  • Carniola and the Slovene lands 8 eras Inner Austria → Austria → The Illyrian Provinces → Kingdom of Serbs, Croats and Slovenes, then Yugoslavia → …
Belgium

Regions are also drawn in 1 other country where this name is attested, further down the register's own list. The order here is how many people a register counted, so the countries above are the ones the name most belongs to.

No record region is drawn yet for Spain — which is a gap in this atlas and not a statement about that country.

Find Zák on the map →

The surname dataset · CC0, and downloadable