The Bielak surname
In the 2010 U.S. Census, 547 people carried this name — #40,082 among all U.S. surnames, about 1 in every 526,300 people counted. That is down 4% from 570 in 2000.
What the name means
The meaning of the Bielak surname
From Polish biel (“white”) or Old Polish biel (“mud; swamp”) + -ak.
From Wiktionary, the free dictionary (en.wiktionary.org) — entry «Bielak» (Polish), by Wiktionary contributors · licensed CC BY-SA 4.0 (creativecommons.org/licenses/by-sa/4.0) · excerpt, lightly adapted.
In Poland’s population register
7,499 people named Bielak have a registered home in Poland.
Of the 8,089 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 Lublin.
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 65 people named Bielak.
23 of them were born outside France. Those born in France came from 15 départements, most often Oise.
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 Argentina’s national register
At least 28 people named Bielak live in Argentina.
RENAPER only publishes a name in a province when more than ten people there share it, so the real number is higher. Most of them live in Buenos Aires Province.
Too few records to say where it concentrates region by region — these are plain counts, not shares.
Where they live today
RENAPER (National Registry of Persons, Argentina), surnames of residents by province, December 2021 — CC BY 4.0.
In Switzerland’s population statistics
21 people named Bielak 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
49 people named Bielak 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 Bielak,
with a public archive behind them.
-
Józef Bielak 1741–1794 · civil engineer -
Jan Bielak 1886–1943 · politician -
Franciszek Bielak 1892–1973 · historian -
Stefan Bielak 1868–1907
-
Antoni Bielak 1872–1934 · teacher
-
Longin Bielak 1926– · athlete
Wikidata and Wikimedia Commons (CC0) · 10 lives in all are documented under this name.
Nearby in the index
Surnames next to Bielak.
- Biechy 114 · U.S. census
- Biedermann 758 · U.S. census
- Bieganski 207 · U.S. census
- Biegel 863 · U.S. census
- Biehler 557 · U.S. census
- Biel 2,359 · U.S. census
- Bielawski 1,086 · U.S. census
- Bielecki 1,505 · U.S. census
- Bieler 673 · U.S. census
- Bielli 106 · U.S. census
- Bien 1,960 · U.S. census
- Bienaime 2,277 · U.S. census
When the index is not enough
This page says where Bielak 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.