Kossakowski

surname · Latin script

(measured from records)Officially recorded in 6 countries · latest register: dane.gov.pl, 2026

/kɔs.saˈkɔf.ski/(recorded in a dictionary) Polish · from Wiktionary

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Kossakowski is a surname written in the Latin script, with more bearers in Poland than in any other country: 1,948 people, counted by dane.gov.pl in 2026.

  • PLPoland1 in 20K(measured from records)
  • CZCzechia1 in 973K
  • BEBelgium1 in 1.7M

carrying the name, as counted by its national register where one exists and as Mondonomo estimates it elsewhere (marked ≈ and "est." on hover). Where a country counts another spelling of the name rather than Kossakowski itself, the figure is that spelling’s, and it is named. Countries with no figure are shown too: flat where a national register lists the name without counting it, hatched where only our records hold it. One hue, darker where it is more common; hover a country for its figure.

Poland (measured from records)

1,948 people, 2026

Record sources
74 (measured from records)

corpus datasets behind its best-documented spelling

strongest: highest-authority source

1 in 20K (inferred from the name graph)

Poland

measured from records inferred from the name graph

Spellings & scripts

(measured from records)

One other spelling is counted as the same name:

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.

How to pronounce Kossakowski

  • Polish:/kɔs.saˈkɔf.ski/(recorded in a dictionary) from Wiktionary

Meaning & origin

No verified etymology recorded for this name yet — the entries below are drawn from usage statistics and the name graph.

Attested across 2 languages in the etymology graph.

Where the surname Kossakowski is found

(measured from records)

Kossakowski 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 Kossakowski is recorded, by country
CountryMost common spellingSources
PL Poland1,9481 in 20K1.9KKossakowski1
US United States1921 in 1.7M192Kossakowski74
DE Germany≈12 est.≈1 in 6.8M—Kossakowski46
CZ Czechia111 in 973K11——
BE Belgium71 in 1.7M7—1
NL Netherlands61 in 2.9M6Kossakowski5

1,948 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: dane.gov.pl — PESEL living persons (surnames); 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).

Other names spelled this way

(inferred from the name graph)

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

  • Russian surname14 spellings in the group

    Most recorded in Russia, Ukraine, Kazakhstan, Türkiye

    Languages: Russian, Ukrainian

    Also written Коссаковский, Коссаковський, Kossakovskij, Kossakovsky, Kossakovskii

23 further groups record this spelling and are not listed here.

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.

Notable people with this name

(measured from records)
1750180018501900Stanisław Szczęsny Kossakowski, b. 1795Stanisław Kazimierz Kossakowski, b. 1837Jan Kossakowski, b. 1900

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)
FormalSzanowni Państwo,Dear Kossakowski, (English)
InformalSzanowni Państwo,Hello, (English)

Evidence

(measured from records)

15 registers and reference works attest this spelling, across 6 countries.

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

Frequently asked questions

How do you pronounce Kossakowski?
In Polish /kɔs.saˈkɔf.ski/ (Wiktionary).
Which countries have the most people with the surname Kossakowski?
In Poland, the national register counted about 1.9 thousand people named Kossakowski, more than in any other country we hold, where it is most often spelled kossakowski. After it come United States, Germany, Czechia and Belgium; the country table on this page ranks them.
Where is Kossakowski most common?
Kossakowski is densest in Poland, where the national register counts about 1 in 20 thousand people carrying it.
How common is the name Kossakowski?
In Poland, the national register counted 1,948 people named Kossakowski in 2026, about 1 in 20 thousand residents.

What do you want to know about Kossakowski?

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

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, “Kossakowski” — ranked 1380th in Poland (dane.gov.pl, 2026). Data snapshot 2026-10-13.

See how Kossakowski parses inside a full name →