Koško

surname · Latin script

Koško is a surname written in the Latin script, with more bearers in the United States than in any other country. Recorded meaning: nickname for a squint-eyed person, from Ukrainian kosyj ‘squint’ -i- -ko, suffix of Ukrainian surnames.

rarermore common
  • PLPoland1 in 126K(measured from records)
  • USUnited States1 in 365K
  • HRCroatia1 in 423K

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)

912 people, 2010

Sources
37 (measured from records)

Highest-authority source

1 in 126K (inferred from the name graph)

Poland

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 Kosko in US United States, PL Poland, 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(measured from records)

nickname for a squint-eyed person, from Ukrainian kosyj ‘squint’ -i- -ko, suffix of Ukrainian surnames.

Sources 1

  • Dictionary of American Family Names

Attested across 15 languages in the etymology graph.

Where in the world(measured from records)

Koško 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 Koško is recorded, by country
CountryMost common spellingSources
US United States9121 in 365K925Kosko10
PL Poland3041 in 126K163Kosko37
BR Brazil261 in 8.1M26——
ES Spain121 in 4.2M12—1
HR Croatia101 in 423K10——
BE Belgium41 in 2.9M4——
CZ Czechia31 in 3.6M3Kosko4

912 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; Census Bureau — Surname Frequency 2000; dane.gov.pl — PESEL living persons (surnames); MVČR — living population register 2017; IBGE — Censo 2022 Nomes no Brasil per-token lookup (v3 API, given+surname); INE — Padrón per-token widgets (current living counts, given + apellidos); DZS — Imena i prezimena (per-token lookup form); 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).

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

Koško is also recorded as 5 other names, grouped separately because the records behind them do not connect to the one described above.

  • Latvian surname3 spellings in the group

    Most recorded in Latvia

    Also written Kosko

  • Ukrainian surname11 spellings in the group

    Most recorded in Ukraine, Russia, Belarus, Kazakhstan

    Languages: Ukrainian, Russian

    Also written Косько, Коско, Kosko

  • Croatian surname14 spellings in the group

    Most recorded in Croatia, United States, Bulgaria, Russia

    Languages: Croatian, Bulgarian, Slovenian

    Also written Kosko, Koshko, Кошко, Коско

  • French surname2 spellings in the group

    Most recorded in France, United States, Canada

    Also written Kosko

  • Hungarian surname5 spellings in the group

    Most recorded in United States, Estonia, Hungary

    Languages: Hungarian, Estonian, Finnish

    Also written Kosko, Koskó

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)

No register attests this spelling yet

None of the official registers or reference works in our corpus lists Koško under this spelling. The statistics on this page rest on person records, and the related names are inferred from the name graph.

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

Frequently asked questions

What does the name Koško mean, and where does it come from?
nickname for a squint-eyed person, from Ukrainian kosyj ‘squint’ -i- -ko, suffix of Ukrainian surnames. Recorded by Dictionary of American Family Names.
In which country does Koško have the most bearers?
In the United States, the national register counted about 912 people named Koško, more than in any other country we hold, where it is most often spelled kosko.
Where is Koško most common?
Measured as a share of residents rather than as a count, Koško is densest in Poland — about 1 in 126 thousand people — even though United States holds more of our records for it.
How common is the name Koško?
In the United States, the national register counted 912 people named Koško in 2010, about 1 in 365 thousand residents.

What do you want to know about Koško?

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Query this name via API
curl https://api.mondonomo.ai/api/v1/name-graph/ko%C5%A1ko

The same payload this page is built from: spellings and scripts, countries and languages, related names, and the registers that attest the form. Rate-limited for casual use; a free API key gives 1,000 requests a day, and bulk access is licensed separately.

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, “Koško”. Data snapshot 2026-10-10.

See how Koško parses inside a full name →