Kostak
surname · Latin script
Recorded as a male name· opposite-gender records fall within measured source noise
/kostak/(machine-generated) pronunciation, model-generated
Kostak is a surname written in the Latin script, with more bearers in Türkiye than in any other country.
- TRTürkiye≈1 in 42K(inferred from the name graph)
- CZCzechia1 in 38K
- SKSlovakia1 in 1.4M
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.
- Türkiye (inferred from the name graph)
- Sources
- 33 (measured from records)
- 1 in 38K (inferred from the name graph)
≈2,000 people, est.
Highest-authority source
Czechia
measured from records inferred from the name graph
Meaning & origin
No verified etymology recorded for this name yet — the entries below are drawn from usage statistics and the name graph.
Attested in 1 language in the etymology graph.
Where in the world(measured from records)
Kostak 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.
| Country | Most common spelling | Sources | |||
|---|---|---|---|---|---|
| TR Türkiye | ≈2,000 est. | ≈1 in 42K | — | Kostak | 33 |
| CZ Czechia | 283 | 1 in 38K | 284 | — | — |
| US United States | 141 | 1 in 2.4M | 141 | Kostak | 10 |
| PL Poland | 21 | 1 in 1.8M | 11 | — | — |
| NL Netherlands | ≈7 est. | ≈1 in 2.5M | — | Kostak | 3 |
| SK Slovakia | 4 | 1 in 1.4M | 4 | — | — |
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; KdeJsme.cz — četnost jmen a příjmení (MVČR population register front-end); Census Bureau — Surname Frequency 2010; dane.gov.pl — PESEL living persons (surnames); JÚĽŠ SAV — Databáza priezvisk na Slovensku (surname database, 1995 census). 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).
How to address them(machine-generated)
Evidence(measured from records)
Attested in 12 sources across 4 countries.
| Country | Register | Year | Count | Rank |
|---|---|---|---|---|
| US United States | Census Bureau — Surname Frequency 2010 | 2010 | 141 | #122,314 |
| US United States | Census Bureau — Surname Frequency 2020 | 2020 | 130 | #134,631 |
| US United States | Census Bureau — Surname Frequency 2000 | 2000 | 130 | #122,534 |
| PL Poland | dane.gov.pl — PESEL living persons (surnames) | 2026 | 11 | — |
| PL Poland | dane.gov.pl — PESEL living persons (names) | — | 11 | #127,380 |
| PL Poland | dane.gov.pl — PESEL living persons (surnames) | 2026 | 10 | — |
| PL Poland | dane.gov.pl — PESEL living persons (names) | — | 10 | #135,243 |
| US United States | wru Name Dictionary — US surnames, Census 2010 subset (Khanna et al.) | — | — | — |
Reference works 4
- Nederlandse FamilienamenBank (Dutch surname bank; ex-Meertens Instituut, now CBG)2007
- Nişanyan Adlar (Turkish given-name national-registry frequency)
- Wikidata name items (native-script + romanized given/family names)
- Rymut, Słownik nazwisk współcześnie w Polsce używanych (10 vols, IJP PAN, Kraków 1992–1994) — every Polish surname in the PESEL register at the end of 1990, with bearer counts nationally and per voivodeship1990
These works list the name; their figures are licensed and are not reproduced here.
Register rows as of the 2026-10-09 data build.
Frequently asked questions
- How do you pronounce Kostak?
- A machine transcription gives /kostak/ (IPA) for Turkish.
- In which country does Kostak have the most bearers?
- Mondonomo estimates about 2.0 thousand people named Kostak in Türkiye, more than in any other country we hold, where it is most often spelled kostak.
- Where is Kostak most common?
- Measured as a share of residents rather than as a count, Kostak is densest in Czechia — about 1 in 38 thousand people — even though Türkiye holds more of our records for it.
- How common is the name Kostak?
- In Czechia, the national register counted 283 people named Kostak, about 1 in 38 thousand residents.
What do you want to know about Kostak?
Nobody replies to these one by one, but what readers ask decides what these pages answer next.
Query this name via API
curl -H "X-API-Key: YOUR_KEY" https://api.mondonomo.ai/api/v1/name-graph/kostakThe 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, “Kostak”. Data snapshot 2026-10-10.