Širko

surname · Latin script

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

rarermore common
  • PLPoland1 in 65K(measured from records)
  • HRCroatia1 in 117K
  • FIFinland1 in 186K

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)

593 people, 2026

2 (measured from records)

recorded for this name

Sources
11 (measured from records)

Highest-authority source

1 in 65K (inferred from the name graph)

Poland

measured from records inferred from the name graph

Name dossier (print, CSV)

Spellings & scripts(measured from records)

ŠirkoLatin(measured from records)
СиркоCyrillic(measured from records)

2 other spellings are counted as the same name:

Locally spelled Sirko in US United States.

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 15 languages in the etymology graph.

Where in the world(measured from records)

Širko 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 Širko is recorded, by country
CountryMost common spellingSources
PL Poland5931 in 65K299——
US United States3481 in 956K373Sirko3
HR Croatia361 in 117K40Širko11
FI Finland301 in 186K30——
CZ Czechia281 in 382K28——
NO Norway221 in 249K22——

593 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 2000; dane.gov.pl — PESEL living persons (surnames); DZS — Imena i prezimena (per-token lookup form); DZS — Učestalost prezimena (Popis 2021); DVV — Nimipalvelu (Finnish name service, per-name lookup); MVČR — living population register 2017; SSB — Navnesøk (name-search service, living population). 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)

Širko is also recorded as 3 other names, grouped separately because the records behind them do not connect to the one described above.

  • Ukrainian surname16 spellings in the group

    Most recorded in Ukraine, Russia, Kazakhstan, Poland

    Languages: Ukrainian, Russian, Polish

    Also written Сірко, Сирко, Sirko, Sìrko

  • English surname7 spellings in the group

    Most recorded in United States, United Kingdom, Australia, Canada

    Languages: English, Finnish, Estonian

    Also written Sirko, Sirkó

  • Italian surname3 spellings in the group

    Most recorded in Italy, United States

    Also written Sirko, Sirkó

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 Širko
CountryRegisterYearCountRank
HR CroatiaDZS — Učestalost prezimena (Popis 2021)202140—
HR CroatiaDZS — Imena i prezimena (per-token lookup form)202136#16,489

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

Frequently asked questions

In which country does Širko have the most bearers?
In Poland, the national register counted about 593 people named Širko, more than in any other country we hold.
Where is Širko most common?
Širko is densest in Poland, where the national register counts about 1 in 65 thousand people carrying it.
How common is the name Širko?
In Poland, the national register counted 593 people named Širko in 2026, about 1 in 65 thousand residents.

What do you want to know about Širko?

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/%C5%A1irko

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, “Širko”. Data snapshot 2026-10-10.

See how Širko parses inside a full name →