The Janusz surname
In the 2010 U.S. Census, 1,117 people carried this name — #22,906 among all U.S. surnames, about 1 in every 263,200 people counted. About the same as in 2000 (1,115).
In Poland’s population register
7,176 people named Janusz have a registered home in Poland.
Of the 7,854 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 Subcarpathian.
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 64 people named Janusz.
26 of them were born outside France. Those born in France came from 13 départements, most often Rhône.
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 the Nordic population registers
26 people named Janusz 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).
Who carried it
People named Janusz,
with a public archive behind them.
-
Bohdan Janusz 1887–1930 · historian -
Bohdan Janusz 1887–1930 · historian
-
Bohdan Janusz 1887–1930 · historian
-
Bohdan Janusz 1889–1930 · historian
-
Bohdan Janusz 1889–1930 · historian
-
Anton Janusz 1820–1861
Wikidata and Wikimedia Commons (CC0) · 10 lives in all are documented under this name.
Nearby in the index
Surnames next to Janusz.
- Janson 3,930 · U.S. census
- Janssen 11,423 · U.S. census
- Janssens 557 · U.S. census
- Janton 139 · U.S. census
- Jantzen 1,590 · U.S. census
- Janus 2,172 · U.S. census
- Janvier 1,482 · U.S. census
- Janvrin 520 · U.S. census
- Jany 267 · U.S. census
- Jaques 3,224 · U.S. census
- Jaquet 263 · U.S. census
- Jaquin 183 · U.S. census
When the index is not enough
This page says where Janusz 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.