Košin

surname · Latin script

Košin is a surname written in the Latin script, with more bearers in Poland than in any other country. Recorded meaning: habitational name for someone from a place called Kossy, now in Belarus.

rarermore common
  • PLPoland1 in 110K(measured from records)
  • FIFinland1 in 147K
  • SISlovenia1 in 210K

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.

Poland (measured from records)

347 people, 2026

Sources
15 (measured from records)

Highest-authority source

1 in 110K (inferred from the name graph)

Poland

measured from records inferred from the name graph

Name dossier (print, CSV)

Spellings & scripts(measured from records)

3 other spellings are counted as the same name:

Locally spelled Kosin in US United States, PL Poland and Košín 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(measured from records)

habitational name for someone from a place called Kossy, now in Belarus.

Sources 1

  • Dictionary of American Family Names

Attested across 14 languages in the etymology graph.

Where in the world(measured from records)

Košin 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 Košin is recorded, by country
CountryMost common spellingSources
PL Poland3471 in 110K176Kosin15
US United States3121 in 1.1M376Kosin15
CZ Czechia441 in 243K44Košín5
FI Finland381 in 147K38——
SI Slovenia101 in 210K10——

347 people counted by dane.gov.pl — PESEL living persons (surnames), 2026. 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 2020; dane.gov.pl — PESEL living persons (surnames); MVČR — living population register 2017; DVV — Nimipalvelu (Finnish name service, per-name lookup); stat.si Imena rojstva — full name register (per-token frequency + rank). 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)

Košin is also recorded as another name, grouped separately because the records behind them do not connect to the one described above.

  • Finnish surname3 spellings in the group

    Most recorded in United States

    Also written Kosin

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 2 sources across 2 countries.

Official registers attesting Košin
CountryRegisterYearCountRank
CZ CzechiaMVČR — living population register 2017—7#101,397

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

Frequently asked questions

What does the name Košin mean, and where does it come from?
habitational name for someone from a place called Kossy, now in Belarus. Recorded by Dictionary of American Family Names.
In which country does Košin have the most bearers?
In Poland, the national register counted about 347 people named Košin, more than in any other country we hold, where it is most often spelled kosin.
Where is Košin most common?
Košin is densest in Poland, where the national register counts about 1 in 110 thousand people carrying it.
How common is the name Košin?
In Poland, the national register counted 347 people named Košin in 2026, about 1 in 110 thousand residents.

What do you want to know about Košin?

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Query this name via API
curl -H "X-API-Key: YOUR_KEY" https://api.mondonomo.ai/api/v1/name-graph/ko%C5%A1in

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, “Košin”. Data snapshot 2026-10-10.

See how Košin parses inside a full name →