The Ostrowski surname
In the 2010 U.S. Census, 7,005 people carried this name — #5,015 among all U.S. surnames, about 1 in every 42,200 people counted. About the same as in 2000 (6,980).
Where the name comes from
The origin of the Ostrowski surname
From Ostrów + -ski.
From Wiktionary, the free dictionary (en.wiktionary.org) — entry «Ostrowski» (Polish), by Wiktionary contributors · licensed CC BY-SA 4.0 (creativecommons.org/licenses/by-sa/4.0) · excerpt, lightly adapted.
In Poland’s population register
36,980 people named Ostrowski have a registered home in Poland.
Of the 41,055 in Poland’s national register, these are the ones with a permanent address on file. They live in all 16 of Poland’s voivodeships, most of all in Masovian.
Where it concentrates, on the mapWhere they live today
PESEL register, Ministry of Digital Affairs of Poland (dane.gov.pl) — CC0 · living people by voivodeship of permanent residence, 20 January 2026.
In France’s civil register
France’s register of deaths holds 249 people named Ostrowski.
81 of them were born outside France. Those born in France came from 23 départements, most often Pas-de-Calais.
Where it concentrates, on the mapWhere they were born
Fichier des personnes décédées, INSEE — Licence Ouverte 2.0 · deaths recorded in France since 1970, by place of birth.
In Argentina’s national register
At least 204 people named Ostrowski live in Argentina.
RENAPER only publishes a name in a province when more than ten people there share it, so the real number is higher. Most of them live in Misiones.
Where it concentrates, on the mapWhere they live today
RENAPER (National Registry of Persons, Argentina), surnames of residents by province, December 2021 — CC BY 4.0.
In Switzerland’s population statistics
40 people named Ostrowski live in Switzerland.
They live in 6 of Switzerland’s 26 cantons, most of all in Zurich.
Too few records to say where it concentrates region by region — these are plain counts, not shares.
Where they live today
Swiss Federal Statistical Office (FSO), «Surnames of the permanent resident population by canton», 2025, opendata.swiss/en/dataset/nachnamen-der-standigen-wohnbevolkerung-nach-kanton3 · names with fewer than 3 bearers in a canton are not published.
In Belgium’s population register
At least 36 people named Ostrowski live in Belgium.
Statbel only publishes a name in a municipality when five or more people there share it, so the real number is higher. Most of them live in Hainaut.
Too few records to say where it concentrates region by region — these are plain counts, not shares.
Where they live today
Statbel (Statistics Belgium), family names of the population by municipality, 1 January 2026 — CC BY 4.0.
In the Nordic population registers
86 people named Ostrowski is counted in Sweden.
Sweden’s figure is from 31 December 2022, the last count Statistics Sweden published.
Counted, by country
Own calculations based on data from Statistics Sweden (SCB), surnames with at least two bearers, 31 December 2022 — CC BY 4.0 (names with 20 or more bearers shown).
In print
Ostrowski in American newspapers,
1900–1955.
Chronicling America, Library of Congress — digitised newspapers in the public domain · 2,812 pages in all carry the name.
Who carried it
People named Ostrowski,
with a public archive behind them.
-
Antoni Kazimierz Ostrowski 1712–1784 · Catholic priest -
Tomasz Adam Ostrowski 1735–1817 · politician -
Antoni Jan Ostrowski 1782–1845 · politician -
Władysław Ostrowski 1790–1869 · politician -
Józefat Bolesław Ostrowski 1803–1871 · writer
Wikidata and Wikimedia Commons (CC0) · 190 lives in all are documented under this name.
Nearby in the index
Surnames next to Ostrowski.
- Ossola 174 · U.S. census
- Osswald 386 · U.S. census
- Oster 6,259 · U.S. census
- Ostermann 956 · U.S. census
- Ostertag 969 · U.S. census
- Ostin 164 · U.S. census
- Oswald 14,322 · U.S. census
- Otero 20,937 · U.S. census
- Othon 452 · U.S. census
- Ott 25,738 · U.S. census
- Otta 153 · U.S. census
- Ottaviani 382 · U.S. census
When the index is not enough
This page says where Ostrowski is.
A volume says what happened to it.
Every page in the index is free and stays free. The Heritage Volume is the long form: the full paper trail, the arms, the crossing — bound, and yours.