Kopetzky
surname · Latin script
Recorded as a male name· opposite-gender records fall within measured source noise
/koʊptski/(machine-generated) pronunciation, model-generated
Kopetzky is a surname written in the Latin script, with more bearers in the United States than in any other country.
- CZCzechia1 in 486K(measured from records)
- NLNetherlands1 in 524K
- USUnited States1 in 2.4M
carrying the name, as counted by each country's national register. One hue, darker where it is more common; hover a country for its figure.
- United States (measured from records)
- Sources
- 4 (measured from records)
- 1 in 486K (inferred from the name graph)
139 people, 2010
Reference-verified
Czechia
measured from records inferred from the name graph
Spellings & scripts(measured from records)
One other spelling is counted as the same name:
Locally spelled Kopetzký in CZ Czechia.
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 in 1 language in the etymology graph.
Where in the world(measured from records)
Kopetzky 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 | |||
|---|---|---|---|---|---|
| US United States | 139 | 1 in 2.4M | 139 | — | 2 |
| NL Netherlands | 33 | 1 in 524K | 33 | — | — |
| CZ Czechia | 22 | 1 in 486K | 22 | Kopetzký | 4 |
| BE Belgium | 3 | 1 in 3.9M | 3 | — | — |
139 people counted by Census Bureau — Surname Frequency 2010, 2010. 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: Census Bureau — Surname Frequency 2010; CBG Familienamenbank — Dutch surname bearer counts (GBA/BRP 2007); MVČR — living population register 2017; Familienaam.be — Belgian family-name frequency (population register). 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).
Notable people with this name(measured from records)
- Franz Kopetzkyb. 1843CZschool director in Vienna, founder of teachers' union, author of historical biographies and textbook of math (1843-1901)
- Josef Kopetzkyb. 1852PLcomposer, kapellmeister and musician
- Olga Kopetzkyb. 1870CZCzech painter and illustrator
- Oskar von Kopetzkyb. 1873ATAustrian physician
- Bruno Kopetzkyb. 1892CZHolocaust victim (born 1892)
- Helmut Kopetzkyb. 1940DEGerman journalist and author
- Steffen Kopetzkyb. 1971DEGerman author
The ten people covered by the most Wikipedia language editions — a proxy for cross-cultural notability, which favours historical and Western figures over equally prominent contemporary ones — shown by birth year. Source: Wikidata (CC0).
How to address them(machine-generated)
Evidence(measured from records)
Attested in 8 sources across 3 countries.
| Country | Register | Year | Count | Rank |
|---|---|---|---|---|
| US United States | Census Bureau — Surname Frequency 2010 | 2010 | 139 | #123,796 |
| US United States | Census Bureau — Surname Frequency 2000 | 2000 | 139 | #116,123 |
| US United States | Census Bureau — Surname Frequency 2020 | 2020 | 134 | #131,805 |
| NL Netherlands | CBG Familienamenbank — Dutch surname bearer counts (GBA/BRP 2007) | 2007 | 33 | #39,193 |
| BE Belgium | Familienaam.be — Belgian family-name frequency (population register) | 2008 | 3 | #121,225 |
| US United States | wru Name Dictionary — US surnames, Census 2010 subset (Khanna et al.) | — | — | — |
Reference works 2
- Nederlandse FamilienamenBank (Dutch surname bank; ex-Meertens Instituut, now CBG)2007
- Wikidata name items (native-script + romanized given/family names)
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 Kopetzky?
- A machine transcription gives /koʊptski/ (IPA) for English.
- In which country does Kopetzky have the most bearers?
- In the United States, the national register counted about 139 people named Kopetzky, more than in any other country we hold.
- Where is Kopetzky most common?
- Measured as a share of residents rather than as a count, Kopetzky is densest in Czechia — about 1 in 486 thousand people — even though United States holds more of our records for it.
- How common is the name Kopetzky?
- In the United States, the national register counted 139 people named Kopetzky in 2010, about 1 in 2.4 million residents.
What do you want to know about Kopetzky?
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/kopetzkyThe 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, “Kopetzky”. Data snapshot 2026-10-10.