The Stefaniak surname
In the 2010 U.S. Census, 1,019 people carried this name — #24,531 among all U.S. surnames, about 1 in every 285,700 people counted. That is up 1% from 1,012 in 2000.
In Poland’s population register
12,746 people named Stefaniak have a registered home in Poland.
Of the 13,949 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 Greater Poland.
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 170 people named Stefaniak.
56 of them were born outside France. Those born in France came from 16 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 Switzerland’s population statistics
38 people named Stefaniak 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/en/dataset/nachnamen-der-standigen-wohnbevolkerung-nach-kanton3 · names with fewer than 3 bearers in a canton are not published.
In the Nordic population registers
41 people named Stefaniak 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 Stefaniak,
with a public archive behind them.
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Paweł Stefaniak 1893–1952 · military personnel -
Franciszek Stefaniak 1898–
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Stanisław Stefaniak 1900–1986 · military officer
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Tadeusz Stefaniak 1914–
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Ludwik Stefaniak 1930–1972 · translator
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Jan Stanisław Stefaniak 1935– · poet
Wikidata and Wikimedia Commons (CC0) · 10 lives in all are documented under this name.
Nearby in the index
Surnames next to Stefaniak.
- Steckler 1,529 · U.S. census
- Steeg 351 · U.S. census
- Steen 12,989 · U.S. census
- Stefan 3,013 · U.S. census
- Stefanelli 928 · U.S. census
- Stefani 1,702 · U.S. census
- Stefanini 239 · U.S. census
- Stefano 1,285 · U.S. census
- Stefanovic 351 · U.S. census
- Stefanski 2,311 · U.S. census
- Steff 275 · U.S. census
- Steffan 1,847 · U.S. census
When the index is not enough
This page says where Stefaniak 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.