20,177 people were registered with the surname OSTROWSKI (male) in the PESEL register on 20 January 2026.
Surname OSTROWSKI
People with the surname OSTROWSKI in the PESEL register on 20 January 2026: 20,177 men and 171 women. Most registered in: MAZOWIECKIE.
6 verified statements · 1 possible finding
male
20,177people in the PESEL register · 20 January 2026
about 1 in 1,051
Most registered in: MAZOWIECKIE (21.7%, 20 January 2026)
female
171people in the PESEL register · 20 January 2026
about 1 in 126,084
Each 1-in-X is computed within its own dataset. The datasets are different sizes, so these two figures are not compared with each other.
01
How many people have this surname?
The PESEL register publishes two separate surname lists, male and female. We show each figure on its own and never add them up.
male
female
171 people were registered with the surname OSTROWSKI (female) in the PESEL register on 20 January 2026.
The male and female datasets are separate and are never summed.
02
How rare is this surname?
“1 in X” means that roughly one in every X people on this list has this surname. The bigger X, the rarer the name. The rank counts from the most common surname on the list.
male
about 1 in 1,051
1001k10k100k1M10M
← more commonrarer →
#45 rank on the surname list
About 1 in 1,051 people counted in the PESEL register (male) bore the surname OSTROWSKI on 20 January 2026.
OSTROWSKI (male) ranked 45 among the surnames in this dataset.
- #43WALCZAK20,882
- #44MICHALAK20,290
- #45OSTROWSKI this surname20,177
- #46SZEWCZYK20,041
- #47TOMASZEWSKI19,259
female
about 1 in 126,084
1001k10k100k1M10M
← more commonrarer →
#18,941 rank on the surname list
About 1 in 126,084 people counted in the PESEL register (female) bore the surname OSTROWSKI on 20 January 2026.
OSTROWSKI (female) ranked 18,941 among the surnames in this dataset.
Two places above and two below on the same list. Surnames with the same count share a place.
The other grammatical form
OSTROWSKA (female): 20,705 people, rank 44 on the surname list on 20 January 2026.
The same surname in the other grammatical gender, on the other list. It says nothing about kinship.
03
Where is it most often registered?
The map and the list show the voivodeships where people with this surname have a registered permanent address. The brighter the colour and the longer the bar, the bigger the share.
male
Among the 17,974 people with the surname OSTROWSKI (male) who had a registered voivodeship on 20 January 2026, 21.7% were registered in MAZOWIECKIE.
Hover over or tap a voivodeship to see its figures.
Share of people with a registered voivodeship, lowest first:
- 0%–5%
- 5%–10%
- 10%–15%
- 15%–20%
- 20%–25%
- not listed in the dataset — not zero
| Voivodeship | Share | Count |
|---|---|---|
| MAZOWIECKIE | 21.7% | 3,907 |
| KUJAWSKO-POMORSKIE | 8.2% | 1,469 |
| POMORSKIE | 8.0% | 1,430 |
| DOLNOŚLĄSKIE | 6.8% | 1,219 |
| LUBELSKIE | 6.1% | 1,101 |
| WARMIŃSKO-MAZURSKIE | 6.1% | 1,090 |
| PODLASKIE | 6.0% | 1,087 |
| WIELKOPOLSKIE | 6.0% | 1,085 |
| ŚLĄSKIE | 5.8% | 1,042 |
| ZACHODNIOPOMORSKIE | 5.2% | 929 |
| ŁÓDZKIE | 4.4% | 794 |
| MAŁOPOLSKIE | 4.4% | 783 |
| PODKARPACKIE | 4.2% | 750 |
| LUBUSKIE | 3.1% | 563 |
| ŚWIĘTOKRZYSKIE | 2.1% | 376 |
| OPOLSKIE | 1.9% | 349 |
female
Only 34.5% of bearers had a registered voivodeship, so this is not the surname's distribution.
Among the 59 people with the surname OSTROWSKI (female) who had a registered voivodeship on 20 January 2026, 15.3% were registered in PODKARPACKIE.
Hover over or tap a voivodeship to see its figures.
Share of people with a registered voivodeship, lowest first:
- 0%–4%
- 4%–8%
- 8%–12%
- 12%–16%
- 16%–20%
- not listed in the dataset — not zero
| Voivodeship | Share | Count |
|---|---|---|
| PODKARPACKIE | 15.3% | 9 |
| MAZOWIECKIE | 11.9% | 7 |
| LUBELSKIE | 10.2% | 6 |
| OPOLSKIE | 10.2% | 6 |
| ŁÓDZKIE | 6.8% | 4 |
| PODLASKIE | 6.8% | 4 |
| ŚLĄSKIE | 6.8% | 4 |
| WARMIŃSKO-MAZURSKIE | 6.8% | 4 |
| MAŁOPOLSKIE | 5.1% | 3 |
| WIELKOPOLSKIE | 5.1% | 3 |
| ZACHODNIOPOMORSKIE | 5.1% | 3 |
| DOLNOŚLĄSKIE | 3.4% | 2 |
| KUJAWSKO-POMORSKIE | 3.4% | 2 |
| POMORSKIE | 3.4% | 2 |
04
How did this count change between editions of the list?
The PESEL register publishes its lists every year. We show the number of people with this surname on each edition, beside how the whole list changed. We say what changed, not why.
male
The number of people with the surname OSTROWSKI (male) in the PESEL register changed from 20,629 on 30 June 2019 to 20,177 on 20 January 2026: −2.2%. The whole list changed by +6.7% between those editions.
| As of | Share of the list | People |
|---|---|---|
| 30 June 2019* | 1 in 963 | 20,629 |
| 22 January 2020 | 1 in 969 | 20,512 |
| 1 February 2021 | 1 in 977 | 20,448 |
| 27 January 2022 | 1 in 991 | 20,390 |
| 30 January 2023 | 1 in 1,024 | 20,318 |
| 19 January 2024 | 1 in 1,034 | 20,294 |
| 22 January 2025 | 1 in 1,042 | 20,242 |
| 20 January 2026 | 1 in 1,051 | 20,177 |
* The 2019 files describe their contents in fewer words than the later ones. We read them as the same list: people with their current surname.
female
The number of people with the surname OSTROWSKI (female) in the PESEL register changed from 116 on 30 June 2019 to 171 on 20 January 2026: +47.4%. The whole list changed by +6.5% between those editions.
| As of | Share of the list | People |
|---|---|---|
| 30 June 2019* | 1 in 174,563 | 116 |
| 22 January 2020 | 1 in 169,919 | 119 |
| 2 February 2021 | 1 in 164,742 | 123 |
| 27 January 2022 | The publisher's file dated 27 January 2022 repeats the data of the previous edition, so it is not shown as an edition of its own. | |
| 30 January 2023 | 1 in 152,639 | 140 |
| 19 January 2024 | 1 in 147,119 | 146 |
| 22 January 2025 | 1 in 137,169 | 157 |
| 20 January 2026 | 1 in 126,084 | 171 |
* The 2019 files describe their contents in fewer words than the later ones. We read them as the same list: people with their current surname.
05
What does this surname mean?
We give a meaning only when a scholarly work supports it. We don't guess.
This is a scholarly interpretation, not a measured value. Surname origins are often contested.
Ostrowski (z Ostrowa)
- Root
- Ostrów
- Type
- from a place name
06
Where does it appear in old print?
Polona, the National Library's digital library, searches its catalogue and the text of its scanned pages. We show how many results it returns for this word, and from which years.
The word OSTROWSKI appears on 130,366 pages of works not under copyright and in 2,256 catalogue records in Polona (searched on 1 October 2026).
These are search results for the word in any inflected form. Some may be another meaning of the same spelling, and they are not a count of people or of mentions of anyone's family.
- before 180045
- 1800–184910,967
- 1850–189940,673
- 1900–191822,456
- 1919–193940,348
- 1940 on15,704
Catalogue records by kind
- Books504
- Periodicals339
- Ephemera147
- Manuscripts67
- Maps and atlases50
- Photographs36
Most common places of publication
- Warszawa70,995
- Kraków12,894
- Lwów10,463
- Poznań9,146
- Wilno2,951
- Paryż1,536
Example pages in the public domain
„Parów. 205 Ostrowski Karol 272 Orlicki Michał 18 Osiński Józef 118 Ostrowski Kazimierz 176”
„Ostrowski Ostrowski Ostrowski Ostrowski Ostrowski Ostrowski Ostrowski Ostrowski _ _ Ostrowski Franciszek”
„Ostrowska Jadwiga Ostrowska Kornelia Ostrowski, dr.”
07
Who well known has this surname?
Wikidata, the open knowledge base behind Wikipedia, lists people with this surname. Polish citizens come first, and among them those the most Wikipedia articles are written about.
Wikidata lists 137 people with the surname OSTROWSKI who have a Wikipedia article (as of 4 October 2026).
Sharing a surname does not mean being related. Wikidata is edited by volunteers and can be wrong.
- Stanisław Ostrowski1892–1982Polish politician (1892-1982)WikipediaWikidata
- Marek Ostrowski1959–2017Polish footballer (1959-2017)WikipediaWikidata
- Kazimierz Ostrowski1917–1999Polish artist (1917-1999)WikipediaWikidata
The other people (134) will be in the “Surname and family” report.
Sources on this page
- Official data Ministerstwo Cyfryzacji — Nazwiska występujące w rejestrze PESEL · 20 January 2026 · CC0 1.0 · Dane pochodzą z rejestru PESEL, Ministerstwo Cyfryzacji, dane.gov.pl (CC0 1.0) · dane.gov.pl
- Scholarly work ks. Józef Buryan — Skąd pochodzi twoje imię i nazwisko i nazwa miejscowości rodzinnej? (Zwięzły zarys imiennictwa polskiego) · 1933 · s. 16 (skan ZBC oai:zbc.uz.zgora.pl:82526, str. PDF 18)
- Digital library Biblioteka Narodowa — Polona · Polona, Biblioteka Narodowa · polona.pl
- Source Wikidata · CC0 · wikidata.org
How to read these figures
- Wykaz nazwisk męskich osób żyjących (wg pola nazwisko aktualne) występujących w rejestrze PESEL, stan na 20.01.2026
- Surnames occurring once are not published; absence from the dataset is not zero.
- The publisher does not state whether the split is by a person's sex or by the grammatical gender of the surname form. The datasets are therefore neither summed nor compared numerically.
- The male and female datasets are separate and are never summed.
- Wykaz nazwisk żeńskich osób żyjących (wg pola nazwisko aktualne) występujących w rejestrze PESEL, stan na 20.01.2026
- Denominator: 21,197,537 people counted in the PESEL register — the sum of the published counts in this dataset, not Poland's population.
- The 1-in-X figure is rounded; the count of people is exact.
- Denominator: 21,560,302 people counted in the PESEL register — the sum of the published counts in this dataset, not Poland's population.
- A permanent registered residence is an address in the register — not an actual address, and not information about a family's roots.
- Shares are of the people with a registered voivodeship, not of every bearer of the surname.
- Only 34.5% of bearers had a registered voivodeship, so this is not the surname's distribution.
- The size of the list itself changes between editions, so beside the count we show the share of that edition's list (“1 in X”).
- This is a scholarly interpretation, not a measured value.
- Polona's figures are search results for the word in any inflected form, in the catalogue and in the text of pages of works not under copyright; not every result is the surname.
- The people from Wikidata share the surname; that does not mean they are related to each other or to anyone. No date of death in Wikidata does not mean a person is living.
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