The Janowski surname
In the 2000 U.S. Census, 2,020 people carried this name — #13,755 among all U.S. surnames, about 1 in every 133,300 people counted.
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In Poland’s population register
12,731 people named Janowski have a registered home in Poland.
Of the 14,124 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 164 people named Janowski.
37 of them were born outside France. Those born in France came from 23 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.
In Belgium’s population register
At least 24 people named Janowski 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 Limburg.
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 Switzerland’s population statistics
21 people named Janowski live in Switzerland.
They live in 4 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 · names with fewer than 3 bearers in a canton are not published.
Nearby in the index
Surnames next to Janowski.
- Jankovic 577 · U.S. census
- Jankowiak 610 · U.S. census
- Jankowski 9,060 · U.S. census
- Janky 107 · U.S. census
- Jannetta 149 · U.S. census
- Janny 130 · U.S. census
- Jans 1,096 · U.S. census
- Jansen 16,036 · U.S. census
- Janson 3,865 · U.S. census
- Janssen 10,720 · U.S. census
- Janssens 522 · U.S. census
- Janton 133 · U.S. census
When the index is not enough
This page says where Janowski is.
A volume says what happened to it.
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