The Klonowski surname
In the 2010 U.S. Census, 670 people carried this name — #33,941 among all U.S. surnames, about 1 in every 434,800 people counted. That is up 6% from 630 in 2000.
In Poland’s population register
4,650 people named Klonowski have a registered home in Poland.
Of the 5,179 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 54 people named Klonowski.
14 of them were born outside France. Those born in France came from 15 départements, most often Nord.
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 Klonowski.
- Klimek 3,492 · U.S. census
- Kling 7,713 · U.S. census
- Klinger 9,179 · U.S. census
- Klingler 3,668 · U.S. census
- Klipfel 542 · U.S. census
- Klock 2,413 · U.S. census
- Klop 133 · U.S. census
- Klopfenstein 1,604 · U.S. census
- Klopp 2,073 · U.S. census
- Klos 2,479 · U.S. census
- Klosowski 708 · U.S. census
- Kloster 1,474 · U.S. census
When the index is not enough
This page says where Klonowski 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.