Častek

surname · Latin script

Častek is a surname written in the Latin script, with more bearers in Czechia than in any other country.

rarermore common
  • CZCzechia1 in 37K(measured from records)
  • HRCroatia1 in 66K
  • SKSlovakia1 in 777K

carrying the name, as counted by its national register where one exists and as Mondonomo estimates it elsewhere (marked ≈ and "est." on hover). One hue, darker where it is more common; hover a country for its figure.

Czechia (measured from records)

289 people

Sources
24 (measured from records)

Highest-authority source

1 in 37K (inferred from the name graph)

Czechia

measured from records inferred from the name graph

Name dossier (print, CSV)

Spellings & scripts(measured from records)

2 other spellings are counted as the same name:

Locally spelled Castek in CZ Czechia, US United States and Částek in SK Slovakia.

Spellings marked ● are how people bearing the name write it in our records, and ○ marks a model's transliteration; click a spelling to open its page.

Meaning & origin

No verified etymology recorded for this name yet — the entries below are drawn from usage statistics and the name graph.

Attested across 2 languages in the etymology graph.

Where in the world(measured from records)

Častek counted together with the spellings and other-language forms grouped with it. Where a register counted another spelling, the row names it.

Sorted by bearers: national registers' counts, and Mondonomo's estimates (≈, est.) where no register counts.

Where Častek is recorded, by country
CountryMost common spellingSources
CZ Czechia2891 in 37K289Castek24
US United States≈66 est.≈1 in 5MlistedCastek6
HR Croatia641 in 66K64——
SK Slovakia71 in 777K7Částek2
CH Switzerland31 in 2.8M3——

289 people counted by MVČR — living population register 2017, counting the spelling částek. Exact figures are national registers' own counts, while figures marked ≈ and est. are Mondonomo’s estimates, counted from our sources and calibrated against those registers; hover one for how far to trust it in that country. A dash means neither exists.

Registers cited: MVČR — living population register 2017; DZS — Imena i prezimena (per-token lookup form); JÚĽŠ SAV — Databáza priezvisk na Slovensku (surname database, 1995 census); BFS — Familiennamen der Wohnbevölkerung (surnames). Figures without a register are Mondonomo estimates; see Methodology.

Country figures for a list of names, at full precision, are available under licence rather than by scraping this table (how that works).

Other names spelled this way(inferred from the name graph)

Častek is also recorded as 2 other names, grouped separately because the records behind them do not connect to the one described above.

  • Croatian surname2 spellings in the group

    Most recorded in Croatia

    Also written Castek

  • a separate name3 spellings in the group

    Also written Částek, Castek

Grouping is the name graph's, not a register's: two spellings join a group when the evidence links them, so a group is a claim about the records rather than about the people.

Evidence(measured from records)

Attested in 3 sources across 2 countries.

Official registers attesting Častek
CountryRegisterYearCountRank
HR CroatiaDZS — Imena i prezimena (per-token lookup form)202164#11,245
HR CroatiaDZS — Učestalost prezimena (Popis 2021)202150—
CZ CzechiaMVČR — living population register 2017—2#175,680

Register rows as of the 2026-10-09 data build.

Frequently asked questions

In which country does Častek have the most bearers?
In Czechia, the national register counted about 289 people named Častek, more than in any other country we hold, where it is most often spelled castek.
Where is Častek most common?
Častek is densest in Czechia, where the national register counts about 1 in 37 thousand people carrying it.
How common is the name Častek?
In Czechia, the national register counted 289 people named Častek, about 1 in 37 thousand residents.

What do you want to know about Častek?

Nobody replies to these one by one, but what readers ask decides what these pages answer next.

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Query this name via API
curl -H "X-API-Key: YOUR_KEY" https://api.mondonomo.ai/api/v1/name-graph/%C4%8Dastek

The payload this page is built from: spellings and scripts, countries and languages, related names, and the registers that attest the form. It takes a free API key (1,000 requests a day), which returns what this page shows everyone; the full country table, every register citation and the year-by-year series come with a licensed key, as does bulk access.

About this data

measured from records inferred from the name graph machine-generated

These figures come from the data snapshot of and will change as it is rebuilt.

Statistics are aggregated from the Mondonomo name corpus; related names and etymology are inferred from the name graph; pronunciation and any machine-marked transliterations are model-generated. Read how the numbers are made, including their known failure modes, and where the data comes from.

Reference works we consult — surname dictionaries, official name registers, Wikidata and Wiktionary — are named directly, beside the claims they support. The per-country source counts also include datasets of person records: we publish how many there are and their authority tier, but not their names.

Cite this page Mondonomo, “Častek”. Data snapshot 2026-10-10.

See how Častek parses inside a full name →