The Klosowski surname
In the 2000 U.S. Census, 737 people carried this name — #30,023 among all U.S. surnames, about 1 in every 370,400 people counted.
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In Poland’s population register
6,339 people named Klosowski have a registered home in Poland.
Of the 7,133 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 Kuyavian-Pomeranian.
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 55 people named Klosowski.
17 of them were born outside France. Those born in France came from 9 départements, most often Pas-de-Calais.
Too few records to say where it concentrates region by region — these are plain counts, not shares.
Where they were born
Fichier des personnes décédées, INSEE — Licence Ouverte 2.0 · deaths recorded in France since 1970, by place of birth.
Nearby in the index
Surnames next to Klosowski.
- Klock 2,479 · U.S. census
- Klonowski 630 · U.S. census
- Klop 137 · U.S. census
- Klopfenstein 1,498 · U.S. census
- Klopp 2,112 · U.S. census
- Klos 2,241 · U.S. census
- Kloster 1,504 · U.S. census
- Klotz 6,027 · U.S. census
- Klug 6,023 · U.S. census
- Klumpp 1,209 · U.S. census
- Kmiec 1,002 · U.S. census
- Kmieciak 276 · U.S. census
When the index is not enough
This page says where Klosowski 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.